49777 Cappi
| Discovery [1] | |
|---|---|
| Discovered by | P. G. Comba |
| Discovery site | Prescott Observatory |
| Discovery date | 2 December 1999 |
| Designations | |
| MPC designation | 49777 Cappi |
Named after |
Margaret Comba (discoverer's wife)[2] |
| 1999 XS · 2001 KD31 | |
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 23.61 yr (8,623 days) |
| Aphelion | 2.5140 AU |
| Perihelion | 2.1977 AU |
| 2.3558 AU | |
| Eccentricity | 0.0671 |
| 3.62 yr (1,321 days) | |
| 326.12° | |
| Inclination | 4.4681° |
| 237.63° | |
| 341.56° | |
| Physical characteristics | |
| Dimensions | 1.85 km (calculated)[3] |
| 5.9389±0.0018 h[4] | |
| 0.20 (assumed)[3] | |
| S [3] | |
| 15.6[1] | |
|
| |
49777 Cappi, provisional designation 1999 XS, is a stony asteroid from the inner regions of the asteroid belt, about 1.9 kilometers in diameter. It was discovered by Italian–American astronomer Paul Comba at the U.S. Prescott Observatory in Arizona, on 2 December 1999.[2]
The assumed S-type asteroid orbits the Sun at a distance of 2.2–2.5 AU once every 3 years and 7 months (1,321 days). Its orbit shows an eccentricity of 0.07 and is tilted by 4 degrees to the plane of the ecliptic.[1] A photometric light-curve analysis performed at the Palomar Transient Factory in 2013, rendered a rotation period of 5.9389±0.0018 hours with a brightness amplitude of 0.78 in magnitude. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20, a typical value for an asteroid with a stony surface composition.[3]
The minor planet was named after Margaret Capitola Sonntag Comba (b. 1940), a psychologist and art therapist by profession, faculty member at Prescott College, and wife of the discoverer.[2]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 49777 Cappi (1999 XS)" (2015-04-23 last obs.). Jet Propulsion Laboratory. Retrieved January 2016.
- 1 2 3 "49777 Cappi (1999 XS)". Minor Planet Center. Retrieved January 2016.
- 1 2 3 4 5 "LCDB Data for (49777) Cappi". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
- ↑ Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved January 2016.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (45001)-(50000) – Minor Planet Center
- 49777 Cappi at the JPL Small-Body Database
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