4450 Pan information

4450 Pan
Discovery
Discovered by	C. S. Shoemaker; E. M. Shoemaker
Discovery site	Palomar Obs.
Discovery date	25 September 1987
Designations
MPC designation	(4450) Pan
Pronunciation	/ˈpæn/
Named after	Pan (Greek deity)
Alternative designations	1987 SY · 1937 CA
Minor planet category	NEO · Apollo · PHA
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	78.85 yr (28,799 days)
Earliest precovery date	6 February 1937
Aphelion	2.2884 AU
Perihelion	0.5962 AU
Semi-major axis	1.4423 AU
Eccentricity	0.5866
Orbital period (sidereal)	1.73 yr (633 days)
Mean anomaly	152.71°
Mean motion	0° 34m 8.4s / day
Inclination	5.5196°
Longitude of ascending node	311.84°
Argument of perihelion	291.79°
Earth MOID	0.0287 AU · 11.2 LD
Physical characteristics
Mean diameter	1.0±0.2 km; 1.13 km (calculated)
Synodic rotation period	3.51±0.02 h; 56.48±0.02 h; 60±12 h
Geometric albedo	0.20 (assumed)
Spectral type	S
Absolute magnitude (H)	17.1 · 17.43±0.07

4450 Pan (prov. designation: 1987 SY) is a highly eccentric asteroid and contact binary, classified as a potentially hazardous asteroid and near-Earth object of the Apollo group, approximately 1.1 kilometers in diameter. It was discovered on 25 September 1987, by American astronomers Eugene and Carolyn Shoemaker at Palomar Observatory in California, United States.^[4] It was named after Pan from Greek mythology.^[3]

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^ "Pan". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
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[2] "Pan". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)

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Discovery ^[1]
Discovered by	C. S. Shoemaker E. M. Shoemaker
Discovery site	Palomar Obs.
Discovery date	25 September 1987
Designations
MPC designation	(4450) Pan
Pronunciation	/ˈpæn/^[2]
Named after	Pan (Greek deity)^[3]
Alternative designations	1987 SY · 1937 CA
Minor planet category	NEO · Apollo · PHA ^[1]^[4]
Orbital characteristics ^[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	78.85 yr (28,799 days)
Earliest precovery date	6 February 1937
Aphelion	2.2884 AU
Perihelion	0.5962 AU
Semi-major axis	1.4423 AU
Eccentricity	0.5866
Orbital period (sidereal)	1.73 yr (633 days)
Mean anomaly	152.71°
Mean motion	0° 34^m 8.4^s / day
Inclination	5.5196°
Longitude of ascending node	311.84°
Argument of perihelion	291.79°
Earth MOID	0.0287 AU · 11.2 LD
Physical characteristics
Mean diameter	1.0±0.2 km^[5] 1.13 km (calculated)^[6]
Synodic rotation period	3.51±0.02 h^[7] 56.48±0.02 h^[8] 60±12 h^[a]
Geometric albedo	0.20 (assumed)^[6]
Spectral type	S ^[6]
Absolute magnitude (H)	17.1^[1]^[6] · 17.43±0.07^[5]