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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3057939168821272 4.0339e-08  
a 2.319588505937649 4.4795e-09 au
q 1.610272451152214 9.3869e-08 au
i 23.20477534878595 4.6549e-06 deg
node 212.863928075017 8.8034e-06 deg
peri 147.0200860015626 1.0192e-05 deg
M 266.9103280491103 7.592e-06 deg
tp 2459534.167454384708
(2021-Nov-15.66745438)
2.7899e-05 TDB
period 1290.371757265033
3.53
3.7379e-06
1.023e-08
d
yr
n .2789893671906046 8.0816e-10 deg/d
Q 3.028904560723084 5.8493e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2660  
   data-arc span      46137 days (126.32 yr)  
   first obs. used      1894-11-19  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38987  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:20:35  

Additional Information
 Earth MOID = .642725 au 
 Jupiter MOID = 2.54656 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 10.85   n/a E2021B10  
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. 2020-October); 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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