4486 Mithra

4486 Mithra
Discovery
Discovered by	E. W. Elst; V. G. Shkodrov;
Discovery site	Rozhen Obs. – Smolyan
Discovery date	22 September 1987
Designations
MPC designation	(4486) Mithra
Pronunciation	/ˈmɪθrə/
Named after	Mithra; (proto-Indo-Iranian religion)
Alternative designations	1987 SB; 1974 DN1;
Minor planet category	NEO; Apollo; PHA ;
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	29.04 yr (10,607 days)
Aphelion	3.6582 AU
Perihelion	0.7417 AU
Semi-major axis	2.2000 AU
Eccentricity	0.6629
Orbital period (sidereal)	3.26 yr (1,192 days)
Mean anomaly	91.928°
Mean motion	0° 18m 7.2s / day
Inclination	3.0395°
Longitude of ascending node	82.240°
Time of perihelion	2023-May-15
Argument of perihelion	168.87°
Earth MOID	0.0463 AU (18 LD)
Physical characteristics
Mean diameter	1.849±0.022 km; 2.25 km (calculated);
Synodic rotation period	67.5±6 h; 100 h;
Geometric albedo	0.20 (assumed); 0.297±0.056;
Spectral type	S
Absolute magnitude (H)	15.6; 15.68±0.31;

4486 Mithra (prov. designation: 1987 SB), is an eccentric asteroid and suspected contact-binary, classified as near-Earth object and potentially hazardous asteroid, approximately 2 kilometers in diameter. It belongs to the Apollo group of asteroids and is a relatively slow rotator.

The asteroid was discovered on 22 September 1987, by Belgian astronomer Eric Elst and Bulgarian astronomer Vladimir Shkodrov at Rozhen Observatory, in the Smolyan Province of Bulgaria. It was named after the Indo-Iranian divinity Mithra.

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