482 Petrina

482 Petrina
Discovery
Discovered by	Max Wolf
Discovery site	Heidelberg
Discovery date	3 March 1902
Designations
MPC designation	(482) Petrina
Pronunciation	/pɛˈtraɪnə/
Alternative designations	1902 HT
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	111.53 yr (40737 d)
Aphelion	3.2971 AU (493.24 Gm)
Perihelion	2.7064 AU (404.87 Gm)
Semi-major axis	3.0017 AU (449.05 Gm)
Eccentricity	0.098396
Orbital period (sidereal)	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°
Argument of perihelion	86.737°
Physical characteristics
Mean radius	23.285±1.4 km
Synodic 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. Retrieved 6 May 2016.
^ 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
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
482 Petrina at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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[1] 'Petrinum' in Noah Webster (1884) A Practical Dictionary of the English Language

[jpldata-2] "482 Petrina (1902 HT)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 6 May 2016.

[mpb41_1_47-3] 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.

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