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102921 (1999 XH27)
Classification: Main-belt Asteroid          SPK-ID: 2102921
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05452411635118214 4.5544e-08  
a 2.578450301620793 1.5184e-08 au
q 2.43786257736948 1.1668e-07 au
i 15.37261874270883 5.1365e-06 deg
node 66.69457814461322 1.6128e-05 deg
peri 38.97820401699212 4.3028e-05 deg
M 345.5983389363778 3.9595e-05 deg
tp 2459260.998785921952
(2021-Feb-15.49878592)
0.00016636 TDB
period 1512.295202316408
4.14
1.3358e-05
3.657e-08
d
yr
n .238048761543766 2.1027e-09 deg/d
Q 2.719038025872106 1.6011e-08 au
  Orbit Determination Parameters
   # obs. used (total)      789  
   data-arc span      7797 days (21.35 yr)  
   first obs. used      1999-10-10  
   last obs. used      2021-02-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55077  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:15  

Additional Information
 Earth MOID = 1.46749 au 
 Jupiter MOID = 2.4723 au 
 T_jup = 3.374 
[ show covariance matrix ]

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 15.18   n/a MPCxxxxx  

102921 (1999 XH27)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XH27 = 2001 CM43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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