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

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07209517059643879 3.2356e-08  
a 3.162497233503216 1.6023e-08 au
q 2.934496455943036 9.9191e-08 au
i 9.969889204483316 3.9819e-06 deg
node 152.4366471050141 1.9968e-05 deg
peri 152.6019463081978 3.4782e-05 deg
M 90.36086270074074 2.7791e-05 deg
tp 2458684.889769176935
(2019-Jul-20.38976918)
0.00015879 TDB
period 2054.204414925113
5.62
1.5612e-05
4.274e-08
d
yr
n .1752503292196089 1.3319e-09 deg/d
Q 3.390498011063396 1.7178e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1978  
   data-arc span      10779 days (29.51 yr)  
   first obs. used      1991-08-05  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48713  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 21:39:46  

Additional Information
 Earth MOID = 1.92212 au 
 Jupiter MOID = 1.89355 au 
 T_jup = 3.177 
[ 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 13.37   n/a E2021B10  
diameter diameter 12.382 km 0.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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Alternate Designations
 1991 PW9 = 1995 DY10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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