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JPL Small-Body Database Browser
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391 Ingeborg (A894 VB)
Classification: Mars-crossing Asteroid          SPK-ID: 2000391
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3056858751821708 4.1114e-08  
a 2.319649560845852 4.6562e-09 au
q 1.610565454722749 9.5666e-08 au
i 23.20358946202818 4.8532e-06 deg
node 212.8644935064459 1.0077e-05 deg
peri 147.0247977400034 1.1681e-05 deg
M 211.095539954845 7.7108e-06 deg
tp 2459534.249155578678
(2021-Nov-15.74915558)
2.8699e-05 TDB
period 1290.422704263223
3.53
3.8853e-06
1.064e-08
d
yr
n .2789783524504437 8.3998e-10 deg/d
Q 3.028733666968954 6.0795e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2177  
   data-arc span      45700 days (125.12 yr)  
   first obs. used      1894-11-19  
   last obs. used      2020-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41674  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:25:35  

Additional Information
 Earth MOID = .644286 au 
 Jupiter MOID = 2.54554 au 
 T_jup = 3.412 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.8   n/a MPO263346  
diameter diameter 15.751 km 3.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 26.391 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Koff, R.A.; Brincat, S.M.; Stephens, R.D.; Pravec, P. (2001) Minor Planet Bull. 28, 46-48.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.290   0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a medium resolution spectrum published by Chapman and Gaffey (1979)
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

391 Ingeborg (A894 VB)          Discovered 1894-Nov-01 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A894 VB = 1934 AJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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