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JPL Small-Body Database Browser
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995 Sternberga (A923 LC)
Classification: Main-belt Asteroid          SPK-ID: 2000995
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1689023121144863 3.5123e-08  
a 2.614628090801098 8.5932e-09 au
q 2.173011360945308 9.2436e-08 au
i 13.05391593872484 4.3342e-06 deg
node 221.7382151610751 1.7895e-05 deg
peri 122.2191148765701 2.2197e-05 deg
M 272.6342508706292 1.4729e-05 deg
tp 2459375.258951736664
(2021-Jun-09.75895174)
6.3957e-05 TDB
period 1544.234714057336
4.23
7.6129e-06
2.084e-08
d
yr
n .2331251827995324 1.1493e-09 deg/d
Q 3.056244820656889 1.0045e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2528  
   data-arc span      42417 days (116.13 yr)  
   first obs. used      1903-12-16  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44596  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:42:57  

Additional Information
 Earth MOID = 1.19852 au 
 Jupiter MOID = 2.52293 au 
 T_jup = 3.351 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456142.5 (2012-Aug-03.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1662666150222659 3.4869e-08  
q 2.180797694864176 9.1417e-08 au
tp 2456284.446452626950
(2012-Dec-22.94645263)
6.0535e-05 TDB
node 221.9449821394858 1.788e-05 deg
peri 121.7949337815849 2.2387e-05 deg
i 13.05475163490834 4.3351e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2528  
   data-arc span      42417 days (116.13 yr)  
   first obs. used      1903-12-16  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44596  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:42:57  

Additional Information
 Jupiter MOID = 2.52293 au 
 T_jup = 3.351 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.215820685284982E-15 -3.177380591210426E-15 8.001241327693483E-14 6.454163824205486E-15 1.341540769453363E-14 1.090136514208652E-15
q -3.177380591210426E-15 8.357050382942233E-15 -1.100538414480184E-13 -1.75006540024068E-14 -1.645736187611903E-14 -2.352307424874063E-15
tp 8.001241327693483E-14 -1.100538414480184E-13 3.664445601953172E-9 -3.974527650600939E-12 8.333518027127843E-10 3.002952613464053E-12
node 6.454163824205486E-15 -1.75006540024068E-14 -3.974527650600939E-12 3.196792867297323E-10 -3.11678177401095E-10 1.982051984781146E-12
peri 1.341540769453363E-14 -1.645736187611903E-14 8.333518027127843E-10 -3.11678177401095E-10 5.011949892086677E-10 -1.300024031107349E-12
i 1.090136514208652E-15 -2.352307424874063E-15 3.002952613464053E-12 1.982051984781146E-12 -1.300024031107349E-12 1.879280389960871E-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 10.2   n/a MPO435705  
diameter diameter 20.222 km 0.291 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.612 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Stephens, R.D. (2005) Minor Planet Bull. 32, 27-28.]
[Stephens, R.D. (2013) Minor Planet Bull. 40, 34-35.]
geometric albedo albedo 0.192   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

995 Sternberga (A923 LC)          Discovered 1923-Jun-08 by Belyavskij, S. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A923 LC = A903 XA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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