Astronomy:482 Petrina
From HandWiki
| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery site | Heidelberg |
| Discovery date | 3 March 1902 |
| Designations | |
| (482) Petrina | |
| Pronunciation | /pɛˈtraɪnə/[1] |
| 1902 HT | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 111.53 yr (40737 d) |
| |{{{apsis}}}|helion}} | 3.2971 astronomical unit|AU (493.24 Gm) |
| |{{{apsis}}}|helion}} | 2.7064 AU (404.87 Gm) |
| 3.0017 AU (449.05 Gm) | |
| Eccentricity | 0.098396 |
| Orbital period | 5.20 yr (1899.6 d) |
| Mean anomaly | 287.189° |
| Mean motion | 0° 11m 22.272s / day |
| Inclination | 14.474° |
| Longitude of ascending node | 179.408° |
| 86.737° | |
| Physical characteristics | |
| Mean radius | 23.285±1.4 km |
| Rotation period | 11.7922 h (0.49134 d) |
| Geometric albedo | 0.2372±0.032 |
| Absolute magnitude (H) | 8.84 |
Petrina (minor planet designation: 482 Petrina) is a minor planet orbiting the Sun.
Attempts to produce a light curve for this object have yielded differing synodic rotation periods, perhaps in part because the period is close to half an Earth day. Observations suggest that the pole of rotation is near the orbital plane, yielding only small light variations during certain parts of each orbit. Attempts to observe the asteroid photometrically during an optimal viewing period of the object's orbit gave a rotation period of 11.7922 ± 0.0001 h with an amplitude variation of 0.53 ± 0.05 in magnitude.[3]
References
- ↑ 'Petrinum' in Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ "482 Petrina (1902 HT)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=482;cad=1.
- ↑ Hawkins, Scot; Ditteon, Richard (January 2014), "Asteroid Lightcurve Analysis at the Oakley Observatory - May 2007", Minor Planet Bulletin 41 (1): 47–49, Bibcode: 2014MPBu...41...47P.
External links
- 482 Petrina at AstDyS-2, Asteroids—Dynamic Site
- 482 Petrina at the JPL Small-Body Database
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