4959 Niinoama
| Discovery | |
|---|---|
| Discovered by | Natori and Urata |
| Discovery site | Yakiimo |
| Discovery date | 15 August 1991 |
| Designations | |
| MPC designation | 4959 |
| 1991 PA1 | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 24056 days (65.86 yr) |
| Aphelion | 3.1667 AU (473.73 Gm) |
| Perihelion | 3.1278 AU (467.91 Gm) |
| 3.1472 AU (470.81 Gm) | |
| Eccentricity | 0.0061846 |
| 5.58 yr (2039.3 d) | |
| 37.3052° | |
| 0° 10m 35.508s / day | |
| Inclination | 9.0043° |
| 128.927° | |
| 306.938° | |
| Earth MOID | 2.14151 AU (320.365 Gm) |
| Jupiter MOID | 1.86008 AU (278.264 Gm) |
| Jupiter Tisserand parameter | 3.190 |
| Physical characteristics | |
Mean radius | 13.98 ± 1.2 km |
| 4.73 h (0.197 d) | |
| 0.1082 ± 0.021 | |
| 10.9 | |
|
| |
4959 Niinoama (1991 PA1) is a main-belt asteroid discovered on August 15, 1991 by Natori and Urata at Yakiimo.
Photometric observations of this asteroid collected during 2008 show a rotation period of 4.73 ± 0.01 hours with a brightness variation of 0.32 ± 0.04 magnitude.[2]
References
- ↑ "4959 Niinoama (1991 PA1)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 13 April 2016.
- ↑ Carbo, Landy; et al. (July 2009), "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory and Oakley Observatory: 2008 September and October", The Minor Planet Bulletin, 36 (3): 91–94, Bibcode:2009MPBu...36...91C.
External links
- JPL Small-Body Database Browser on 4959 Niinoama
- Here is a shot of asteroid Niinoama, 2.2au from Earth on 17JAN2005 from the SDSS site - Fermats Brother
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