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JPL Small-Body Database Browser
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66976 (1999 XN78)
Classification: Main-belt Asteroid          SPK-ID: 2066976
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09087204142795616 4.5432e-08  
a 2.894504639830435 2.0627e-08 au
q 2.631475094286353 1.3273e-07 au
i .8149136861912789 5.1614e-06 deg
node 241.6387804765716 0.00051052 deg
peri 179.9098504545966 0.00051222 deg
M 65.83805726243918 4.0079e-05 deg
tp 2458671.546653798873
(2019-Jul-07.04665380)
0.00020026 TDB
period 1798.704420459359
4.92
1.9227e-05
5.264e-08
d
yr
n .2001440569696615 2.1394e-09 deg/d
Q 3.157534185374518 2.2501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      8775 days (24.02 yr)  
   first obs. used      1995-12-27  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54235  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 10:53:43  

Additional Information
 Earth MOID = 1.64429 au 
 Jupiter MOID = 2.10583 au 
 T_jup = 3.283 
[ 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 15.4   n/a MPO468599  

66976 (1999 XN78)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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