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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 ]

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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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03135233191123481 4.8788e-08  
a 2.753257586353082 1.8224e-08 au
q 2.666936540668615 1.3481e-07 au
i 6.390451543780311 5.3861e-06 deg
node 69.30792842927951 3.9168e-05 deg
peri 3.233473919129877 8.4131e-05 deg
M 216.020187398394 7.6188e-05 deg
tp 2459867.871716167215
(2022-Oct-15.37171617)
0.00035532 TDB
period 1668.663220759864
4.57
1.6568e-05
4.536e-08
d
yr
n .2157415561877523 2.1421e-09 deg/d
Q 2.839578632037549 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57669  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:23  

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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03318018756523005 4.8551e-08  
q 2.659222811099515 1.3403e-07 au
tp 2456540.234519823144
(2013-Sep-04.73451982)
0.00032838 TDB
node 69.3301531960328 3.9135e-05 deg
peri 4.608130977889236 8.0903e-05 deg
i 6.394795827294508 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57669  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:23  

Additional Information
 Jupiter MOID = 2.25416 au 
 T_jup = 3.335 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.357193352876712E-15 -6.450106564315531E-15 -3.828242041543201E-12 4.941793538571198E-15 -8.76865553577663E-13 1.778781391031505E-15
q -6.450106564315531E-15 1.796526693424574E-14 1.185879662506963E-11 -1.525802942630611E-14 2.721144044788124E-12 -4.524790731806557E-15
tp -3.828242041543201E-12 1.185879662506963E-11 1.078337985945103E-7 -2.303846333053296E-11 2.326427403644131E-8 -1.214334380846709E-11
node 4.941793538571198E-15 -1.525802942630611E-14 -2.303846333053296E-11 1.531585070829523E-9 -1.527001706812429E-9 -6.253591638438816E-11
peri -8.76865553577663E-13 2.721144044788124E-12 2.326427403644131E-8 -1.527001706812429E-9 6.545235106012531E-9 5.958511734124229E-11
i 1.778781391031505E-15 -4.524790731806557E-15 -1.214334380846709E-11 -6.253591638438816E-11 5.958511734124229E-11 2.905743771101957E-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

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