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JPL Small-Body Database Browser
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39484 (1981 DP3)
Classification: Main-belt Asteroid          SPK-ID: 2039484
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04042815271486722 6.1653e-08  
a 3.031138903693593 2.9423e-08 au
q 2.908595557195093 1.8408e-07 au
i 9.682650861015839 7.0311e-06 deg
node 223.7907639929008 3.0571e-05 deg
peri 310.5002700555343 7.8104e-05 deg
M 160.7780042872148 7.3537e-05 deg
tp 2458139.642400766656
(2018-Jan-21.14240077)
0.00039211 TDB
period 1927.556801677803
5.28
2.8066e-05
7.684e-08
d
yr
n .1867649242225419 2.7194e-09 deg/d
Q 3.153682250192093 3.0613e-08 au
  Orbit Determination Parameters
   # obs. used (total)      663  
   data-arc span      13621 days (37.29 yr)  
   first obs. used      1981-02-28  
   last obs. used      2018-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56301  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:06:56  

Additional Information
 Earth MOID = 1.92006 au 
 Jupiter MOID = 1.84937 au 
 T_jup = 3.220 
[ 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 14.5   n/a MPO351108  

39484 (1981 DP3)          Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 DP3 = 1999 SR21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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