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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .305793917900994 4.0354e-08  
a 2.319588505226115 4.5388e-09 au
q 1.610272448294911 9.3918e-08 au
i 23.2047753384872 4.6554e-06 deg
node 212.8639280670204 8.8035e-06 deg
peri 147.0200857143388 1.0197e-05 deg
M 266.9103288232677 7.6333e-06 deg
tp 2459534.167451456316
(2021-Nov-15.66745146)
2.806e-05 TDB
period 1290.3717566713
3.53
3.7874e-06
1.037e-08
d
yr
n .2789893673189746 8.1886e-10 deg/d
Q 3.028904562157318 5.9268e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2659  
   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      .3897  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:49:18  

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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