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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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .305685877766123 4.1076e-08  
a 2.319649561132974 4.6069e-09 au
q 1.610565448928239 9.5582e-08 au
i 23.20358820498106 4.723e-06 deg
node 212.8644874888539 9.147e-06 deg
peri 147.0248022909979 1.0544e-05 deg
M 211.0955402505876 7.5773e-06 deg
tp 2459534.249154617686
(2021-Nov-15.74915462)
2.8277e-05 TDB
period 1290.422704502813
3.53
3.8442e-06
1.052e-08
d
yr
n .2789783523986464 8.3109e-10 deg/d
Q 3.028733673337709 6.0151e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2384  
   data-arc span      45816 days (125.44 yr)  
   first obs. used      1894-11-19  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40401  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:04:55  

Additional Information
 Earth MOID = .644286 au 
 Jupiter MOID = 2.54554 au 
 T_jup = 3.412 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456363.5 (2013-Mar-12.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3057081125385298 4.1054e-08  
q 1.610880047844927 9.5519e-08 au
tp 2456950.649723955176
(2014-Oct-20.14972396)
2.3283e-05 TDB
node 212.9661727450432 9.168e-06 deg
peri 146.6749986880407 1.0541e-05 deg
i 23.16841744643782 4.7205e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2384  
   data-arc span      45816 days (125.44 yr)  
   first obs. used      1894-11-19  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40401  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:04:55  

Additional Information
 Jupiter MOID = 2.54554 au 
 T_jup = 3.412 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.685461022327409E-15 -3.919254433541884E-15 5.190693680987605E-14 -2.179175057868718E-15 2.518843998034845E-14 -3.053416795073086E-15
q -3.919254433541884E-15 9.123929241626039E-15 -7.75281604278631E-14 5.193311305154628E-15 -5.109863629641834E-14 7.276827382889285E-15
tp 5.190693680987605E-14 -7.75281604278631E-14 5.421087331181967E-10 -8.900828881426366E-13 1.307055757431297E-10 -6.012750289992154E-13
node -2.179175057868718E-15 5.193311305154628E-15 -8.900828881426366E-13 8.405131346202429E-11 -7.717836518132251E-11 -1.111614074105512E-11
peri 2.518843998034845E-14 -5.109863629641834E-14 1.307055757431297E-10 -7.717836518132251E-11 1.111055033888824E-10 1.001362575335387E-11
i -3.053416795073086E-15 7.276827382889285E-15 -6.012750289992154E-13 -1.111614074105512E-11 1.001362575335387E-11 2.228270232943355E-11

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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