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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07582070268174973 7.3273e-08  
a 3.1628181557417 4.4913e-08 AU
q 2.923011060718768 2.4541e-07 AU
i 9.977391914520183 9.0076e-06 deg
node 152.6414997632242 4.2827e-05 deg
peri 153.8807024495024 7.3424e-05 deg
M 28.45141928511636 6.2514e-05 deg
tp 2456638.127978851498
(2013-Dec-11.62797885)
0.00035559 JED
period 2054.517106077712
5.62
4.3762e-05
1.198e-07
d
yr
n .1752236566612373 3.7323e-09 deg/d
Q 3.402625250764631 4.8318e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      8012 days (21.94 yr)  
   first obs. used      1991-08-05  
   last obs. used      2013-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59113  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 16:28:44  

Additional Information
 Earth MOID = 1.91151 AU 
 T_jup = 3.176 
[ 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 13.2 mag n/a MPO266010  

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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