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78331 (2002 PQ84)
Classification: Main-belt Asteroid          SPK-ID: 2078331
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2103718273759895 4.8171e-08  
a 2.779626708222491 1.6341e-08 au
q 2.19487155819062 1.3391e-07 au
i 9.694101351543996 5.1531e-06 deg
node 136.7401940728479 2.8733e-05 deg
peri 226.9282719492146 3.0629e-05 deg
M 282.2880183286383 1.2332e-05 deg
tp 2459365.895861137486
(2021-May-31.39586114)
5.9808e-05 TDB
period 1692.692776331177
4.63
1.4927e-05
4.087e-08
d
yr
n .2126788777230331 1.8755e-09 deg/d
Q 3.364381858254363 1.9779e-08 au
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      7864 days (21.53 yr)  
   first obs. used      1998-12-15  
   last obs. used      2020-06-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58215  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:15  

Additional Information
 Earth MOID = 1.2045 au 
 Jupiter MOID = 2.12238 au 
 T_jup = 3.281 
[ 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 15.0   n/a MPO436330  

78331 (2002 PQ84)          Discovered 2002-Aug-10 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2002 PQ84 = 1998 XL84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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