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JPL Small-Body Database Browser
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108904 (2001 PC9)
Classification: Main-belt Asteroid          SPK-ID: 2108904
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07517590122139785 4.6355e-08  
a 3.08443982418393 2.2491e-08 au
q 2.852564280637733 1.4462e-07 au
i 3.04738784511408 4.5751e-06 deg
node 129.8126739832598 0.000102 deg
peri 278.2189224882288 0.00010675 deg
M 112.4797821197197 3.1132e-05 deg
tp 2458382.291680540862
(2018-Sep-20.79168054)
0.00017073 TDB
period 1978.622209353229
5.42
2.1642e-05
5.925e-08
d
yr
n .1819447888021416 1.9901e-09 deg/d
Q 3.316315367730127 2.4182e-08 au
  Orbit Determination Parameters
   # obs. used (total)      898  
   data-arc span      6391 days (17.50 yr)  
   first obs. used      2001-08-11  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56469  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:41:21  

Additional Information
 Earth MOID = 1.86451 au 
 Jupiter MOID = 1.98006 au 
 T_jup = 3.220 
[ 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 14.4   n/a MPO469111  
rotation period rot_per 30.139 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

108904 (2001 PC9)          Discovered 2001-Aug-11 by NEAT at Haleakala
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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