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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07217255740294898 4.1887e-08  
a 3.162019954755523 1.8193e-08 au
q 2.93380888806166 1.3533e-07 au
i 9.970152409825484 5.2387e-06 deg
node 152.438424940881 2.0299e-05 deg
peri 152.4580478036116 3.7796e-05 deg
M 55.43591009926688 2.9956e-05 deg
tp 2458684.247463536829
(2019-Jul-19.74746354)
0.0001715 TDB
period 2053.739406873151
5.62
1.7724e-05
4.853e-08
d
yr
n .1752900094311894 1.5128e-09 deg/d
Q 3.390231021449387 1.9506e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1605  
   data-arc span      10591 days (29.00 yr)  
   first obs. used      1991-08-05  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51288  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:12:57  

Additional Information
 Earth MOID = 1.92344 au 
 Jupiter MOID = 1.89447 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 13.3   n/a MPO431614  
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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