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212908 (2007 XD8)
Classification: Main-belt Asteroid          SPK-ID: 2212908
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05476046175147115 5.101e-08  
a 3.054479520642611 3.194e-08 au
q 2.887214811681809 1.4989e-07 au
i 1.801743574633207 6.8402e-06 deg
node 215.4877711631631 0.00016275 deg
peri 295.2475541764531 0.00017492 deg
M 52.61812294309048 6.2155e-05 deg
tp 2458715.505089764002
(2019-Aug-20.00508976)
0.00033669 TDB
period 1949.863696124719
5.34
3.0584e-05
8.373e-08
d
yr
n .1846282900263678 2.8959e-09 deg/d
Q 3.221744229603413 3.3689e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      8568 days (23.46 yr)  
   first obs. used      1996-11-10  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5566  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 08:51:17  

Additional Information
 Earth MOID = 1.8984 au 
 Jupiter MOID = 1.76825 au 
 T_jup = 3.233 
[ 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 16.2   n/a MPO427253  

212908 (2007 XD8)          Discovered 2007-Dec-04 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 2007 XD8 = 1996 VB25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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