1129 Neujmina
| Discovery | |
|---|---|
| Discovered by | Parchomenko, P. |
| Discovery date | 8 August 1929 |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.61 yr (31636 days) |
| Aphelion | 3.2709 AU (489.32 Gm) |
| Perihelion | 2.7820 AU (416.18 Gm) |
| 3.0265 AU (452.76 Gm) | |
| Eccentricity | 0.080763 |
| 5.27 yr (1923.1 d) | |
| 130.1767° | |
| 0° 11m 13.909s / day | |
| Inclination | 8.6057° |
| 269.3544° | |
| 139.4936° | |
| Earth MOID | 1.79821 AU (269.008 Gm) |
| Jupiter MOID | 2.04721 AU (306.258 Gm) |
| Jupiter Tisserand parameter | 3.222 |
| Physical characteristics | |
|
Mean radius
|
17.38±0.7 km |
| 5.0844 h (0.21185 d) | |
| 0.1216±0.010 | |
| 10.20 | |
1129 Neujmina is a main belt asteroid orbiting the Sun. Approximately 35 kilometers in diameter, it makes a revolution around the Sun once every 5 years. It completes one rotation once every 8 hours. It was discovered by Praskovjya Parchomenko at Simeis on August 8, 1929. It was named for Grigory Nikolaevich Neujmin, an astronomer at the Pulkovo and Simeis Observatories, who discovered seven comets and more than 70 minor planets. Its provisional designation was 1929 PH.
Photometric observations of this asteroid collected during 2008 show a rotation period of 5.089 ± 0.004 hours with a brightness variation of 0.29 ± 0.02 magnitude.
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