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102949 (1999 XB56)
Classification: Main-belt Asteroid          SPK-ID: 2102949
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03135233226479499 4.8788e-08  
a 2.753257587472564 1.8224e-08 au
q 2.666936540779556 1.3481e-07 au
i 6.390451518432155 5.3861e-06 deg
node 69.30792849821745 3.9168e-05 deg
peri 3.233472976747656 8.4131e-05 deg
M 216.0201880191223 7.6187e-05 deg
tp 2459867.871713697064
(2022-Oct-15.37171370)
0.00035532 TDB
period 1668.663221777589
4.57
1.6568e-05
4.536e-08
d
yr
n .2157415560561706 2.1421e-09 deg/d
Q 2.839578634165572 1.8796e-08 au
  Orbit Determination Parameters
   # obs. used (total)      643  
   data-arc span      7542 days (20.65 yr)  
   first obs. used      1999-11-03  
   last obs. used      2020-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57668  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:51:37  

Additional Information
 Earth MOID = 1.68079 au 
 Jupiter MOID = 2.25416 au 
 T_jup = 3.335 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457324.5 (2015-Oct-29.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03318018736378721 4.8551e-08  
q 2.659222811360585 1.3403e-07 au
tp 2456540.234526473278
(2013-Sep-04.73452647)
0.00032838 TDB
node 69.33015329541884 3.9135e-05 deg
peri 4.608132451996068 8.0903e-05 deg
i 6.39479582876795 5.3905e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      643  
   data-arc span      7542 days (20.65 yr)  
   first obs. used      1999-11-03  
   last obs. used      2020-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57668  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:51:37  

Additional Information
 Jupiter MOID = 2.25416 au 
 T_jup = 3.335 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.357193196287311E-15 -6.450105895801383E-15 -3.828242598419414E-12 4.941790996459966E-15 -8.768656895364217E-13 1.778780923246081E-15
q -6.450105895801383E-15 1.796526494672349E-14 1.185879670344658E-11 -1.525802421577285E-14 2.721144202346568E-12 -4.524787934927397E-15
tp -3.828242598419414E-12 1.185879670344658E-11 1.078337916413187E-7 -2.303839335874945E-11 2.326427244467854E-8 -1.214335115922409E-11
node 4.941790996459966E-15 -1.525802421577285E-14 -2.303839335874945E-11 1.531585073298429E-9 -1.527001693307724E-9 -6.253591739093049E-11
peri -8.768656895364217E-13 2.721144202346568E-12 2.326427244467854E-8 -1.527001693307724E-9 6.545234768347128E-9 5.958511686232586E-11
i 1.778780923246081E-15 -4.524787934927397E-15 -1.214335115922409E-11 -6.253591739093049E-11 5.958511686232586E-11 2.905743763199154E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.41   n/a E2021B55  
diameter diameter 4.358 km 0.248 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.093   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102949 (1999 XB56)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XB56 = 1999 VQ35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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