391 Ingeborg

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391 Ingeborg
Discovery
Discovered by Max Wolf
Discovery date November 1, 1894
Designations
1894 BE
Minor planet category Mars crosser[1][2]
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion 453.512 Gm (3.032 AU)
Perihelion 240.489 Gm (1.608 AU)
347.0 Gm (2.32 AU)
Eccentricity 0.307
1290.318 d (3.53 a)
19.09 km/s
90.212°
Inclination 23.17°
213.006°
146.554°
Physical characteristics
Dimensions 18 - 40 km[3]
Mass unknown
Mean density
unknown
unknown
unknown
26.4 h[1]
Albedo unknown
Temperature unknown
Spectral type
S
10.8[1]

391 Ingeborg is a relatively large Mars-crossing asteroid that was discovered by Max Wolf on November 1, 1894 at Heidelberg observatory. When discovered the asteroid was observed for a couple of weeks, and follow-up observations were made in 1901 and 1904.[2]

With an absolute magnitude of 10.8,[1] the asteroid is about 18–40 km in diameter.[3] Other large Mars crossing minor planets include 132 Aethra (43km), 323 Brucia (36km), and 2204 Lyyli (25km).

References[edit]

  1. ^ a b c d "JPL Small-Body Database Browser: 391 Ingeborg (1894 BE)". Jet Propulsion Laboratory. 
  2. ^ a b "(391) Ingeborg = A894BE = 1934 A". IAU Minor Planet Center. Retrieved 2014-06-23. 
  3. ^ a b "Absolute Magnitude (H)". NASA/JPL. Retrieved 2014-06-24. 

External links[edit]