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101812 (1999 JD7)
Classification: Main-belt Asteroid          SPK-ID: 2101812
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06531319618263877 5.4293e-08  
a 2.654408657368665 1.3983e-08 au
q 2.481040743981051 1.4716e-07 au
i 12.96159455175172 4.1468e-06 deg
node 81.09160860180445 1.9793e-05 deg
peri 104.3263953343513 3.8851e-05 deg
M 346.5633051618405 3.1153e-05 deg
tp 2459059.457635499583
(2020-Jul-28.95763550)
0.00013656 TDB
period 1579.610837002321
4.32
1.2482e-05
3.417e-08
d
yr
n .22790423537685 1.8009e-09 deg/d
Q 2.82777657075628 1.4897e-08 au
  Orbit Determination Parameters
   # obs. used (total)      905  
   data-arc span      7675 days (21.01 yr)  
   first obs. used      1999-05-08  
   last obs. used      2020-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56454  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:22  

Additional Information
 Earth MOID = 1.5152 au 
 Jupiter MOID = 2.23056 au 
 T_jup = 3.349 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO417514  
rotation period rot_per 7.420 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Galad, A. (2010) Astron. Astrophys. 514, A55.]

101812 (1999 JD7)          Discovered 1999-May-08 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 JD7 = 2001 XL5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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