Astronomy:846 Lipperta
From HandWiki
| Discovery[1] | |
|---|---|
| Discovered by | Gyllenberg, K. Bergedorf |
| Discovery date | 26 November 1916 |
| Designations | |
| (846) Lipperta | |
| Minor planet category | Main belt[1] |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 99.23 yr (36245 d) |
| |{{{apsis}}}|helion}} | 3.6963 astronomical unit|AU (552.96 Gm) (Q) |
| |{{{apsis}}}|helion}} | 2.5562 AU (382.40 Gm) (q) |
| 3.1262 AU (467.67 Gm) (a) | |
| Eccentricity | 0.18235 (e) |
| Orbital period | 5.53 yr (2019.0 d) |
| Mean anomaly | 27.575° (M) |
| Mean motion | 0° 10m 41.916s / day (n) |
| Inclination | 0.26427° (i) |
| Longitude of ascending node | 261.44° (Ω) |
| 129.22° (ω) | |
| Physical characteristics | |
| Mean radius | 26.205±0.7 km (IRAS) |
| Mass | 1.5×1017 kg (assumed) |
| Rotation period | 1,641 h (68.4 d)[1][2] |
| Geometric albedo | 0.0506±0.003[1] |
| Absolute magnitude (H) | 10.26[1] |
846 Lipperta is a slowly rotating Themistian asteroid located in the asteroid belt at a distance of 3.1 AU. It has a slow rotation period of 1641 hours making it one of the slowest rotating objects in the solar system discovered.[3]
Based on lightcurve studies, Lipperta has a rotation period of 1641 hours, but this figure is based on less than full coverage, so that the period may be wrong by 30 percent.[1] The lack of variation in brightness could be caused by (a) very slow rotation, (b) near pole-on viewing aspect, or (c) a spherical body with uniform albedo.[2]
It has been claimed that 846 Lipperta may show comet-like activity but this claim is unconfirmed.[3]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "JPL Small-Body Database Browser: 846 Lipperta (1916 AT)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=846.
- ↑ 2.0 2.1 Buchheim, Robert K.; Gartrelle, Gordon M. (July 2011). "846 Lipperta: A Very Slow Rotator". The Minor Planet Bulletin 38 (3): 151–153. ISSN 1052-8091. Bibcode: 2011MPBu...38..151B.
- ↑ 3.0 3.1 "Lipperta Report No.7". https://britastro.org/asteroids/Project%20NeilBone/Lipperta_Report_No7_20170622.htm.
External links
- 846 Lipperta at AstDyS-2, Asteroids—Dynamic Site
- 846 Lipperta at the JPL Small-Body Database
 |  |
