402 Chloë

For other uses, see Chloe (disambiguation).

402 Chloë

Modelled shape of Chloë from its lightcurve
Discovery
Discovered by	Auguste Charlois
Discovery date	21 March 1895
Designations
MPC designation	(402) Chloë
Pronunciation	/ˈkloʊi/ KLOH-ee[1]
Named after	Χλόη Khloē
Alternative designations	1895 BW
Minor planet category	Main belt
Adjectives	Chloëan (/kloʊˈiːən/ kloh-EE-ən)
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	120.77 yr (44,113 d)
Aphelion	2.84302 AU (425.310 Gm)
Perihelion	2.27556 AU (340.419 Gm)
Semi-major axis	2.55929 AU (382.864 Gm)
Eccentricity	0.11086
Orbital period (sidereal)	4.09 yr (1,495.5 d)
Mean anomaly	263.333°
Mean motion	0° 14^m 26.617^s / day
Inclination	11.8254°
Longitude of ascending node	129.415°
Argument of perihelion	17.6154°
Physical characteristics
Dimensions	54.21±2.5 km
Synodic rotation period	10.664 h (0.4443 d)
Geometric albedo	0.1483±0.015
Spectral type	K
Absolute magnitude (H)	9.02

402 Chloë (prov. designation: A895 FB or 1895 BW) is a large main-belt asteroid. It was discovered by French astronomer Auguste Charlois on 21 March 1895 from Nice.[2] This asteroid is orbiting the Sun at a distance of 2.56 AU with a period of 4.09 years and an eccentricity of 0.11. The orbital plane is inclined at an angle of 11.8° to the plane of the ecliptic.[2]

This asteroid spans a girth of approximately 54 km.[2] It is classified as a K-type asteroid and is a Barbarian, which means it belongs to a class of asteroids of which 234 Barbara is the prototype.[3] Analysis of the asteroid light curve, based on photometric data collected during 2009, show a rotation period of 10.664±0.001 h with a brightness variation of 0.30±0.01 in magnitude.[4]

References

1. Noah Webster (1884) A Practical Dictionary of the English Language
2. "402 Chloe (1895 BW)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016.
3. Gil-Hutton, R.; et al. (September 2014), "Polarimetric survey of main-belt asteroids. IV. New results from the first epoch of the CASLEO survey", Astronomy & Astrophysics, 569: 6, Bibcode:2014A&A...569A.122G, doi:10.1051/0004-6361/201424238, hdl:11336/8937, A122.
4. Warner, Brian D. (July 2009), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2008 December - 2009 March", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, 36 (3): 109–116, Bibcode:2009MPBu...36..109W.

External links

• Lightcurve plot of 402 Chloe, Palmer Divide Observatory, B. D. Warner (2009)
• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• 402 Chloë at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 402 Chloë at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters