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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03927214743881685 6.231e-08  
a 3.035699365442745 2.9835e-08 au
q 2.916480932383155 1.868e-07 au
i 9.686657084306409 7.0333e-06 deg
node 223.8590091054218 3.0523e-05 deg
peri 312.13165750165 7.9075e-05 deg
M 84.49561484788671 7.4491e-05 deg
tp 2458147.061662354026
(2018-Jan-28.56166235)
0.0003991 TDB
period 1931.908559354464
5.29
2.8481e-05
7.798e-08
d
yr
n .1863442233105959 2.7471e-09 deg/d
Q 3.154917798502336 3.1007e-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 = 1.92714 au 
 Jupiter MOID = 1.8469 au 
 T_jup = 3.219 
[ 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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