Photometric observations of this asteroid at the European Southern Observatory in 1981 gave a light curve with a period of 8.9 ± 0.1 hours and a brightness variation of 0.12 in magnitude.[5]Stellar occultation events were observed for this asteroid during 2001 and 2005. The resulting chords provided cross-section diameter estimates of 146.5 and 145.3 km, respectively.[6]
^ a bYeomans, Donald K., "238 Hypatia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
^ a b cCarry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73 (1): 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
^Piironen, J.; et al. (March 1998), "Physical studies of asteroids. XXXII. Rotation periods and UBVRI-colours for selected asteroids", Astronomy and Astrophysics Supplement, 128 (3): 525–540, Bibcode:1998A&AS..128..525P, doi:10.1051/aas:1998393.
^Schober, H. J. (January 1983), "Rotation periods and lightcurves of the asteroids 136 Austria and 238 Hypatia", Astronomy and Astrophysics, 117 (2): 362–364, Bibcode:1983A&A...117..362S.
^Shevchenko, Vasilij G.; Tedesco, Edward F. (September 2006), "Asteroid albedos deduced from stellar occultations", Icarus, 184 (1): 211–220, Bibcode:2006Icar..184..211S, doi:10.1016/j.icarus.2006.04.006.
External links
The Asteroid Orbital Elements Database
Minor Planet Discovery Circumstances
Asteroid Lightcurve Data File
238 Hypatia at AstDyS-2, Asteroids—Dynamic Site
Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info