1139 Atami
| Discovery | |
|---|---|
| Discovered by | Okuro Oikawa and Kazuo Kubokawa |
| Discovery date | 1 December 1929 |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.69 yr (31297 days) |
| Aphelion | 2.44496706932325 AU (365.76186750237 Gm) |
| Perihelion | 1.4501914936712 AU (216.94555956046 Gm) |
| 1.94757928149723 AU (291.35371353142 Gm) | |
| Eccentricity | 0.25538769720514 |
| 2.72 yr (992.75 d) | |
| 325.8028921925650° | |
| 0° 21m 45.461s / day | |
| Inclination | 13.0861259136982° |
| 213.3506333014720° | |
| 206.5615422612800° | |
| Known satellites | 1[2] |
| Earth MOID | 0.470132 AU (70.3307 Gm) |
| Jupiter MOID | 2.93913 AU (439.688 Gm) |
| Jupiter Tisserand parameter | 3.824 |
| Physical characteristics | |
| Dimensions | ~6km[2] |
| 27.446 h (1.1436 d) | |
|
S (Tholen) S (SSMASSII) | |
| 12.51 | |
|
| |
1139 Atami is a Mars-crossing asteroid orbiting the Sun. It makes a revolution around the Sun once every 3 years. It completes one rotation once every 27 hours. It was discovered by Okuro Oikawa and Kazuo Kubokawa on December 1, 1929.[1] It is named after a harbor near Tokyo, Japan. Its provisional designation was 1929 XE.[3]
Binary system
Photometric and Arecibo echo spectra observations in 2005 confirmed a 5 km (3 mi) satellite orbiting at least 15 km (9 mi) from the primary.[2] Due to the similar size of the primary and secondary the Minor Planet Center lists this as a binary companion.[4]
References
- 1 2 3 "JPL Small-Body Database Browser: 1139 Atami (1929 XE)". Retrieved 1 May 2016.
- 1 2 3 "Electronic Telegram No. 430". IAU Central Bureau for Astronomical Telegrams. 2006-03-14. Retrieved 2011-01-25.
- ↑ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names. Springer. ISBN 3-540-00238-3.
- ↑ "Satellites and Companions of Minor Planets". IAU Central Bureau for Astronomical Telegrams. 2009-09-17. Retrieved 2011-01-25.
External links
- Orbital simulation from JPL (Java) / Ephemeris
- 1139 Atami at the JPL Small-Body Database
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