68109 Naomipasachoff

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68109 Naomipasachoff
Discovery [1]
Discovered byLONEOS
Discovery siteAnderson Mesa Stn.
Discovery dateDecember 17, 2000
MPC designation(68109) Naomipasachoff
Named after
Naomi Pasachoff [2]
(American biographer)
2000 YH135 · 2000 XZ54
2002 CY169
main-belt · (inner)
Orbital characteristics[1]
Epoch September 4, 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc18.92 yr (6,909 days)
Aphelion2.7247 AU
Perihelion2.2163 AU
2.4705 AU
3.88 yr (1,418 days)
0° 15m 13.68s / day
Physical characteristics
Mean diameter
3.581±0.061 km[3]

68109 Naomipasachoff, provisional designation 2000 YH135, is a background asteroid from the inner regions of the asteroid belt, approximately 3.5 kilometers in diameter. It was discovered on December 17, 2000, by astronomers of the LONEOS program at the Anderson Mesa Station near Flagstaff, Arizona, in the United States. The asteroid was named after American biographer and research associate, Naomi Pasachoff.[2]

Orbit and classification[edit]

Naomipasachoff is a non-family from the main belt's background population.[4] It orbits the Sun in the inner asteroid belt at a distance of 2.2–2.7 AU once every 3 years and 11 months (1,418 days; semi-major axis of 2.47 AU). Its orbit has an eccentricity of 0.10 and an inclination of 9° with respect to the ecliptic.[1]

The body's observation arc begins with a precovery taken at Lincoln Laboratory ETS in March 1998, more than 2 years prior to its official discovery observation at Anderson Mesa.[2]

Physical characteristics[edit]

Rotation period[edit]

As of 2018, no rotational lightcurve of Naomipasachoff has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.[1][5]

Diameter and albedo[edit]

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Naomipasachoff measures 3.581 kilometers in diameter and its surface has an albedo of 0.218.[3] Based on its albedo and its location in the inner asteroid belt, Naomipasachoff is possibly a common, stony S-type asteroid.


This minor planet was named by LONEOS-astronomer Edward Bowell after American biographer and research associate, Naomi Pasachoff (born 1947), who has written several scientific biographies. Her published work includes biographies of Marie Curie, Alexander Graham Bell, Niels Bohr, Isaac Newton, Albert Einstein, Linus Pauling. She is also an amateur astronomer.[2] The official naming citation was published by the Minor Planet Center on January 6, 2007 (M.P.C. 58596).[6]


  1. ^ a b c d e "JPL Small-Body Database Browser: 68109 Naomipasachoff (2000 YH135)" (2017-02-01 last obs.). Jet Propulsion Laboratory. Retrieved 1 February 2018.
  2. ^ a b c d e "68109 Naomipasachoff (2000 YH135)". Minor Planet Center. Retrieved 1 February 2018.
  3. ^ a b c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters" (PDF). The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 1 February 2018.
  4. ^ "Small Bodies Data Ferret". Nesvorny HCM Asteroid Families V3.0. Retrieved 1 February 2018.
  5. ^ "LCDB Data for (68109) Naomipasachoff". Asteroid Lightcurve Database (LCDB). Retrieved 1 February 2018.
  6. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 1 February 2018.

External links[edit]