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9860 Archaeopteryx (1991 PW9)
Classification: Main-belt Asteroid          SPK-ID: 2009860
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07566029795383751 5.5886e-08  
a 3.161093028541227 3.0847e-08 au
q 2.921923788141999 1.7563e-07 au
i 9.978052090117151 7.5678e-06 deg
node 152.6444409168648 3.4715e-05 deg
peri 153.4772927632926 6.1679e-05 deg
M 134.044733084528 5.0751e-05 deg
tp 2456636.133586383458
(2013-Dec-09.63358638)
0.00028885 JED
period 2052.836411919541
5.62
3.0048e-05
8.227e-08
d
yr
n .1753671154261024 2.5669e-09 deg/d
Q 3.400262268940455 3.3181e-08 au
  Orbit Determination Parameters
   # obs. used (total)      914  
   data-arc span      8903 days (24.38 yr)  
   first obs. used      1991-08-05  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53098  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:12:08  

Additional Information
 Earth MOID = 1.90952 au 
 Jupiter MOID = 1.88715 au 
 T_jup = 3.177 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a MPO302126  

9860 Archaeopteryx           Discovered 1991 Aug. 6 by E. W. Elst at the European Southern Observatory.
Archaeopteryx is the early bird that had a dinosaur-like skeleton, a bird-like skull and teeth in the jaws. It lived during the Upper Jurassic. Feathers were preserved as impressions in rocks.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1991 PW9 = 1995 DY10 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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