Eleanor F. Helin

	Email		Print
	Bookmark		Link

Eleanor F. Helin

> with Schelte J. Bus

Schelte J. Bus

Schelte John "Bobby" Bus is an Associate Astronomer at the University of Hawaii Institute for Astronomy and Support Astronomer at NASA's Infrared Telescope Facility IRTF....

with R. Scott Dunbar

R. Scott Dunbar

R. Scott Dunbar had a hand in the discovery of eight asteroids.Dunbar discovered the comet 3551 Verenia by himself. He was a co-discoverer with Eleanor F....

with Maria A.

Discussion

Ask a question about 'Eleanor F. Helin'

Start a new discussion about 'Eleanor F. Helin'

Answer questions from other users

Full Discussion Forum

Encyclopedia

Asteroid Asteroid Asteroids, sometimes called minor planets or planetoids, are small Solar System bodies in orbit around the Sun, smaller than planets but larger than meteoroids.... s discovered: 872 2062 Aten 2062 Aten '2062 Aten' is an asteroid that was discovered at the Mount Palomar Observatory by Eleanor F. Helin, who is now the principal scientist for the NEAT project....			January 7 1976	Aten asteroid Aten asteroid The Aten asteroids are a group of near-Earth asteroids, named after the first of the group to be discovered . They are defined by having semi-major axis of less than one astronomical unit ....
2100 Ra-Shalom 2100 Ra-Shalom The asteroid 2100 Ra-Shalom was discovered in 1978 by Eleanor F. Helin. It was the second asteroid in the Aten asteroid, after the discovery of 2062 Aten in 1976, also by Helin....	September 10 1978	Aten asteroid Aten asteroid The Aten asteroids are a group of near-Earth asteroids, named after the first of the group to be discovered . They are defined by having semi-major axis of less than one astronomical unit ....
2135 Aristaeus 2135 Aristaeus 2135 Aristaeus is an Apollo asteroid discovered on April 17, 1977 by E. F. Helin and S. J. Bus at Palomar Observatory.External links ...	April 17 1977	Apollo asteroid Apollo asteroid The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo, the first asteroid of this group to be discovered by Karl Wilhelm Reinmuth....
3360 Syrinx	November 4 1981	Apollo asteroid Apollo asteroid The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo, the first asteroid of this group to be discovered by Karl Wilhelm Reinmuth....
3752 Camillo 3752 Camillo 3752 Camillo is an Apollo asteroid with a perihelion of 2.3273245 Astronomical unit. It has an Orbital eccentricity of 0.302048 and an orbital period of 613.8625482 days ....	August 15 1985	Apollo asteroid Apollo asteroid The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo, the first asteroid of this group to be discovered by Karl Wilhelm Reinmuth....
(3757) 1982 XB (3757) 1982 XB 1982 XB is an asteroid, about 0.5 kilometers in diameter, that completes one revolution around the Sun about every 2 1/2 years. It was discovered by E....	December 14 1982	Amor asteroid Amor asteroid The Amor asteroids are a group of near-Earth asteroids named after the asteroid 1221 Amor. They approach the orbit of the Earth from beyond, but do not cross it....
(3988) 1986 LA (3988) 1986 LA 1986 LA is an Amor asteroid that is 0.7 kilometers in diameter. It completes one revolution around the Sun about once every 2 years. It was discovered by Eleanor F....	June 4 1986	Amor asteroid Amor asteroid The Amor asteroids are a group of near-Earth asteroids named after the asteroid 1221 Amor. They approach the orbit of the Earth from beyond, but do not cross it....
4015 Wilson-Harrington	November 15 1979	also a comet Comet A comet is a Small Solar System body that orbits the Sun and, when close enough to the Sun, exhibits a visible coma or a tail?both primarily from the effects of solar radiation upon the Comet nucleus....
(4034) 1986 PA (4034) 1986 PA 1986 PA is an Apollo asteroid, 0.8 kilometers in diameter. It completes one revolution around the Sun almost once every year. It was disclovered by Eleanor F....	August 2 1986	Apollo asteroid Apollo asteroid The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo, the first asteroid of this group to be discovered by Karl Wilhelm Reinmuth....
4055 Magellan 4055 Magellan 4055 Magellan is an Amor asteroid discovered on February 24, 1985 by E. Helin at Palomar Observatory....	February 24 1985	Amor asteroid Amor asteroid The Amor asteroids are a group of near-Earth asteroids named after the asteroid 1221 Amor. They approach the orbit of the Earth from beyond, but do not cross it....
(4197) 1982 TA (4197) 1982 TA 1982 TA was discovered on October 11, 1982 by Eleanor F. Helin and Eugene Shoemaker. It is an Apollo asteroid, Mars-crosser asteroid and Venus-crosser asteroid, only 1.7 km in diameter....	October 11 1982	Apollo asteroid Apollo asteroid The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo, the first asteroid of this group to be discovered by Karl Wilhelm Reinmuth....
4660 Nereus 4660 Nereus File:Nereus.jpg'4660 Nereus' is a small asteroid, discovered by Eleanor F. Helin on February 28, 1982. It is named after Nereus, a Titan in Greek mythology....	February 28 1982	Apollo asteroid Apollo asteroid The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo, the first asteroid of this group to be discovered by Karl Wilhelm Reinmuth....
4769 Castalia 4769 Castalia The asteroid 4769 Castalia was the first asteroid to be modeled by radar imaging. It is an Apollo asteroid, Mars-crosser asteroid and Venus-crosser asteroid....	August 9 1989	Apollo asteroid Apollo asteroid The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo, the first asteroid of this group to be discovered by Karl Wilhelm Reinmuth....
4957 Brucemurray 4957 Brucemurray 4957 Brucemurray is an Amor asteroid discovered on December 15, 1990 by Eleanor F. Helin at Palomar Observatory.External links ...	December 15 1990	Amor asteroid Amor asteroid The Amor asteroids are a group of near-Earth asteroids named after the asteroid 1221 Amor. They approach the orbit of the Earth from beyond, but do not cross it....
5653 Camarillo 5653 Camarillo 5653 Camarillo is an Amor asteroid with a perihelion of 1.248795 Astronomical unit. It has an Eccentricity of 0.30403 and an orbital period of 877.922 days ....	November 21 1992	Amor asteroid Amor asteroid The Amor asteroids are a group of near-Earth asteroids named after the asteroid 1221 Amor. They approach the orbit of the Earth from beyond, but do not cross it....
6456 Golombek 6456 Golombek 6456 Golombek is an Amor asteroid discovered on July 27, 1992 by Eleanor F. Helin, K. Lawrence at Palomar Observatory.External links ...	July 27 1992	Amor asteroid Amor asteroid The Amor asteroids are a group of near-Earth asteroids named after the asteroid 1221 Amor. They approach the orbit of the Earth from beyond, but do not cross it....
6489 Golevka 6489 Golevka 6489 Golevka is an Apollo asteroid, Mars-crosser asteroid and Alinda family, discovered in 1991 by Eleanor F. Helin.Its name has a complicated origin....	May 10 1991	Apollo asteroid Apollo asteroid The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo, the first asteroid of this group to be discovered by Karl Wilhelm Reinmuth....
7336 Saunders 7336 Saunders 7336 Saunders is an Amor asteroid discovered on September 6, 1989 by E. F. Helin at Palomar Observatory.External links ...	September 6 1989	Amor asteroid Amor asteroid The Amor asteroids are a group of near-Earth asteroids named after the asteroid 1221 Amor. They approach the orbit of the Earth from beyond, but do not cross it....
8013 Gordonmoore 8013 Gordonmoore 8013 Gordonmoore is an Amor asteroid discovered on May 18, 1990 by E. F. Helin at Palomar Observatory.External links ...	May 18 1990	Amor asteroid Amor asteroid The Amor asteroids are a group of near-Earth asteroids named after the asteroid 1221 Amor. They approach the orbit of the Earth from beyond, but do not cross it....
9969 Braille 9969 Braille 9969 Braille is a small Mars crossing asteroid that orbits the Sun once every 3.58 years. It was discovered in 1992 by astronomers at Palomar observatory and later named after Louis Braille, the inventor of the Braille....	May 27 1992
26858 Misterrogers 26858 Misterrogers 26858 Misterrogers is a asteroid belt asteroid named after beloved children's television host Mister Rogers. Rogers, who had a lifelong fascination with the sky and astronomy —he obtained a pilot's license while still in high school— also produced a planetarium show called The Sky above Mister Roger's Neighborhood, which is s...	March 21 1993
with Schelte J. Bus Schelte J. Bus Schelte John "Bobby" Bus is an Associate Astronomer at the University of Hawaii Institute for Astronomy and Support Astronomer at NASA's Infrared Telescope Facility IRTF.... with R. Scott Dunbar R. Scott Dunbar R. Scott Dunbar had a hand in the discovery of eight asteroids.Dunbar discovered the comet 3551 Verenia by himself. He was a co-discoverer with Eleanor F.... with Maria A. Barucci with Eugene M. Shoemaker with Kenneth J. Lawrence Kenneth J. Lawrence Kenneth J. Lawrence is an American astronomer.He has discovered numerous asteroids, and also co-discovered periodic comet 152P/Helin-Lawrence. The asteroid 4969 Lawrence is named in his honor....

Eleanor Francis ("Glo") Helin (died January 2009) was an American astronomer

Astronomer

An astronomer is a scientist who studies Celestial body such as planets, stars, and Galaxy.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using physical laws....
. She was principal investigator of the Near Earth Asteroid Tracking

Near Earth Asteroid Tracking

Near Earth Asteroid Tracking is a program run by NASA and Jet Propulsion Laboratory to discover near-Earth objects. The NEAT system began observations in December 1995....
(NEAT) program of NASA

NASA

Jet Propulsion Laboratory

Jet Propulsion Laboratory is a List of federally funded research and development centers and NASA field center located in the San Gabriel Valley area of Los Angeles County, California, California, United States....
. Some sources give her name as Eleanor Kay Helin. She retired in 2002.

Helin discovered or co-discovered 872 asteroids, including the first two Aten asteroid

Aten asteroid

The Aten asteroids are a group of near-Earth asteroids, named after the first of the group to be discovered . They are defined by having semi-major axis of less than one astronomical unit ....
s: 2062 Aten

2062 Aten

'2062 Aten' is an asteroid that was discovered at the Mount Palomar Observatory by Eleanor F. Helin, who is now the principal scientist for the NEAT project....
and 2100 Ra-Shalom

2100 Ra-Shalom

The asteroid 2100 Ra-Shalom was discovered in 1978 by Eleanor F. Helin. It was the second asteroid in the Aten asteroid, after the discovery of 2062 Aten in 1976, also by Helin....
; the Apollo asteroid

Apollo asteroid

The Apollo asteroids are a group of near-Earth asteroids named after 1862 Apollo, the first asteroid of this group to be discovered by Karl Wilhelm Reinmuth....
s 4660 Nereus

4660 Nereus

File:Nereus.jpg'4660 Nereus' is a small asteroid, discovered by Eleanor F. Helin on February 28, 1982. It is named after Nereus, a Titan in Greek mythology....
, 4769 Castalia

4769 Castalia

The asteroid 4769 Castalia was the first asteroid to be modeled by radar imaging. It is an Apollo asteroid, Mars-crosser asteroid and Venus-crosser asteroid....
and others; various Amor asteroid

Amor asteroid

The Amor asteroids are a group of near-Earth asteroids named after the asteroid 1221 Amor. They approach the orbit of the Earth from beyond, but do not cross it....
s; three Trojan asteroid

Trojan asteroid

The Jupiter Trojans, commonly called Trojans or Trojan asteroids, are a large group of objects that share the orbit of the planet Jupiter around the Sun....
s including 3240 Laocoon

3240 Laocoon

3240 Laocoon is a Jupiter Trojan discovered on November 07, 1978 by S. J. Bus at Palomar Observatory.External links ...
; and 9969 Braille

9969 Braille

9969 Braille is a small Mars crossing asteroid that orbits the Sun once every 3.58 years. It was discovered in 1992 by astronomers at Palomar observatory and later named after Louis Braille, the inventor of the Braille....
.

She also discovered or co-discovered comet

Comet

A comet is a Small Solar System body that orbits the Sun and, when close enough to the Sun, exhibits a visible coma or a tail?both primarily from the effects of solar radiation upon the Comet nucleus....
s, including periodic comets 111P/Helin-Roman-Crockett

111P/Helin-Roman-Crockett

111P/Helin-Roman-Crockett is a periodic comet in our solar system. It was discovered by Elanor and Ron Helin on the 5th of January 1989 from images obtained on the 3rd and 4th of that month....
, 117P/Helin-Roman-Alu

117P/Helin-Roman-Alu

117P/Helin-Roman-Alu, also known as Helin-Roman-Alu 1, is a periodic comet in our solar system.External links...
and 132P/Helin-Roman-Alu

132P/Helin-Roman-Alu

132P/Helin-Roman-Alu, also known as Helin-Roman-Alu 2, is a periodic comet in our solar system.External links...
.

Helin is credited as the discoverer of the object now known as both asteroid 4015 Wilson-Harrington and comet 107P/Wilson-Harrington

107P/Wilson-Harrington

Comet Wilson-Harrington is a periodic comet .Little known about it distinguishes it from other comets, but for the fact that it is also designated an asteroid, 4015 Wilson-Harrington ....
. Although Wilson and Harrington

Robert G. Harrington

Robert G. Harrington was an American astronomer who worked at Palomar Observatory. He should not be confused with Robert Sutton Harrington, who was also an astronomer, but was born later and worked at the US Naval Observatory....
preceded her by some decades, their observations did not establish an orbit

ORBit

ORBit is a Common Object Request Broker Architecture 2.4 compliant Object Request Broker . It features mature C , C++ and Python bindings, and less developed bindings for Perl, Lisp , Pascal , Ruby , and Tcl....
for the object, while her rediscovery did.

Asteroid 3267 Glo

3267 Glo

3267 Glo is a Mars-crossing Asteroid discovered on January 03, 1981 by Bowell, E. at Flagstaff .External links ...
is named for her ("Glo" is Helin's nickname).

Helin was active in planetary science and astronomy at the California Institute of Technology

California Institute of Technology

The California Institute of Technology is a private university research university located in Pasadena, California, United States. Caltech maintains a strong emphasis on the natural sciences and engineering....
and the Jet Propulsion Laboratory for over three decades. In the early 1970s, she initiated the Palomar Planet-Crossing Asteroid Survey (PCAS) from Palomar Observatory

Palomar Observatory

Palomar Observatory is a privately owned observatory located in San Diego County, California, 90 miles southeast of Mount Wilson Observatory, on Palomar Mountain in the Palomar Mountain Range....
. This program is responsible for the discovery of thousands of asteroids of all types including more than 200 in high inclination

Inclination

Inclination in general is the angle between a reference plane and another plane or Axis_of_rotation of direction. The axial tilt is expressed as the angle made by the planet's axis and a line drawn through the planet's center perpendicular to the orbital plane....
orbits, other rare and unique orbital types of asteroids, 20 comets, and approximately 30 percent of the near-earth asteroids discovered worldwide.

Helin organized and coordinated the International Near-Earth Asteroid Survey

International Near-Earth Asteroid Survey

The International Near-Earth Asteroid Survey was organized and co-ordinated by Eleanor F. Helin during the 1980s, as the international aspect of the Planet-Crossing Asteroid Survey ....
(INAS) during the 1980s, encouraging and stimulating worldwide interest in asteroids. In recognition of her accomplishments, she has received NASA

NASA

The National Aeronautics and Space Administration is an agency of the Federal government of the United States, responsible for the nation's public list of space agencies....
's Exceptional Service Medal. The 1997 JPL Award for Excellence was presented to Helin in recognition of her leadership of the Near-Earth Asteroid (NEAT) program. She has also received NASA's Group Achievement Award for the NEAT Team.

After conducting the PCAS photographic search program from Palomar for nearly 25 years, Helin concentrated on a new, upgraded search program using electronic sensors on a large aperture telescope: NEAT

Near Earth Asteroid Tracking

Near Earth Asteroid Tracking is a program run by NASA and Jet Propulsion Laboratory to discover near-Earth objects. The NEAT system began observations in December 1995....
. She was the principal investigator for this program operating from JPL.

In operation since December 1995, NEAT is the first autonomous observing program; no JPL personnel are on-site, only the JPL Sunspark computer which runs the observing system through the night and transmits the data back to JPL each morning for team member review and confirmation. NEAT has detected over 26,000 objects, including 31 near-earth asteroids, two long period comets and the unique object, 1996 PW, the most eccentric asteroid known (e = 0.99012940), which moves in a long-period (4110.50 a

Julian year (astronomy)

In astronomy, a Julian year is a Units of measurement of time defined as exactly 365.25 days of 86,400 International System of Units seconds each, totalling 31,557,600 seconds....
), comet-like orbit (semi-major axis

Semi-major axis

In geometry, the semi-major axis is used to describe the dimensions of ellipses and hyperbolae....
256.601 AU

Astronomical unit

An astronomical unit is a unit of length based on the mean distance from the Earth to the Sun. The precise value of the AU is currently accepted as 149,597,870,691 Plus-minus sign 6 metres ....
).

External links

, WITI museum