1508 Kemi information

1508 Kemi
	Shape model of Kemi from its lightcurve
Discovery
Discovered by	H. Alikoski
Discovery site	Turku Obs.
Discovery date	21 October 1938
Designations
MPC designation	(1508) Kemi
Named after	Kemi and Kemi River ; (Finnish town and river)
Alternative designations	1938 UP · 1935 FA; 1938 UO
Minor planet category	Mars-crosser
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	81.79 yr (29,873 days)
Aphelion	3.9264 AU
Perihelion	1.6167 AU
Semi-major axis	2.7716 AU
Eccentricity	0.4167
Orbital period (sidereal)	4.61 yr (1,685 days)
Mean anomaly	354.04°
Mean motion	0° 12m 48.96s / day
Inclination	28.723°
Longitude of ascending node	14.298°
Argument of perihelion	92.892°
Mars MOID	0.3966 AU
Physical characteristics
Dimensions	15.78±1.58 km; 15.9±1.6 km; 16±2 km; 17.98±1.34 km; 21.86 km (calculated)
Synodic rotation period	9.15 h; 9.19±0.05 h; 9.19182±0.00005 h; 9.196±0.001 h; 11.36 h
Geometric albedo	0.057 (assumed); 0.084±0.013; 0.109±0.022; 0.11±0.02
Spectral type	Tholen = BCF; SMASS = C; B–V = 0.645; U–B = 0.249
Absolute magnitude (H)	12.03

1508 Kemi, provisional designation 1938 UP, is an eccentric, carbonaceous asteroid and one of the largest Mars-crossers, approximately 17 kilometers in diameter. Discovered by Heikki Alikoski at Turku Observatory in 1938,^[3] the asteroid was later named after the Finnish town of Kemi and the Kemi River.^[2]

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1508 Kemi information

and 23 Related for: 1508 Kemi information

1508 Kemi

List of minor planets named after rivers

1509 Esclangona

26858 Misterrogers

3343 Nedzel

4451 Grieve

5682 Beresford

1316 Kasan

6170 Levasseur

19982 Barbaradoore

7505 Furusho

1204 Renzia

3737 Beckman

7369 Gavrilin

4205 David Hughes

2014 Vasilevskis

1474 Beira

2744 Birgitta

3581 Alvarez

512 Taurinensis

3198 Wallonia

1468 Zomba

1011 Laodamia

Discovery^[1]
Shape model of Kemi from its lightcurve
Discovered by	H. Alikoski
Discovery site	Turku Obs.
Discovery date	21 October 1938
Designations
MPC designation	(1508) Kemi
Named after	Kemi and Kemi River^[2] (Finnish town and river)
Alternative designations	1938 UP · 1935 FA 1938 UO
Minor planet category	Mars-crosser^[1]^[3]^[4]
Orbital characteristics^[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	81.79 yr (29,873 days)
Aphelion	3.9264 AU
Perihelion	1.6167 AU
Semi-major axis	2.7716 AU
Eccentricity	0.4167
Orbital period (sidereal)	4.61 yr (1,685 days)
Mean anomaly	354.04°
Mean motion	0° 12^m 48.96^s / day
Inclination	28.723°
Longitude of ascending node	14.298°
Argument of perihelion	92.892°
Mars MOID	0.3966 AU
Physical characteristics
Dimensions	15.78±1.58 km^[5] 15.9±1.6 km^[6] 16±2 km^[7] 17.98±1.34 km^[8] 21.86 km (calculated)^[4]
Synodic rotation period	9.15 h^[9] 9.19±0.05 h^[10] 9.19182±0.00005 h^[11] 9.196±0.001 h^[12]^[a] 11.36 h^[13]
Geometric albedo	0.057 (assumed)^[4] 0.084±0.013^[8] 0.109±0.022^[5] 0.11±0.02^[6]^[7]
Spectral type	Tholen = BCF^[1] SMASS = C^[1]^[4] B–V = 0.645^[1] U–B = 0.249^[1]
Absolute magnitude (H)	12.03^[1]^[4]^[5]^[6]^[7]^[8]