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108912 (2001 PD12)
Classification: Main-belt Asteroid          SPK-ID: 2108912
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08060213683691748 4.1676e-08  
a 3.050949083127248 2.0179e-08 au
q 2.805036067646558 1.298e-07 au
i 11.06104460424999 3.9401e-06 deg
node 114.4118089589134 2.5579e-05 deg
peri 292.0182959027777 3.8218e-05 deg
M 209.6443025181758 3.0977e-05 deg
tp 2460209.458273899175
(2023-Sep-21.95827390)
0.00017108 TDB
period 1946.484127341313
5.33
1.9311e-05
5.287e-08
d
yr
n .1849488495401815 1.8348e-09 deg/d
Q 3.296862098607938 2.1805e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1086  
   data-arc span      7263 days (19.89 yr)  
   first obs. used      2001-08-11  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53124  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 09:05:12  

Additional Information
 Earth MOID = 1.83864 au 
 Jupiter MOID = 2.01707 au 
 T_jup = 3.204 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.19   n/a MPO614063  
diameter diameter 5.313 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.520 h n/a LCDB (Rev. 2020-October); 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.]
geometric albedo albedo 0.172   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108912 (2001 PD12)          Discovered 2001-Aug-11 by NEAT at Haleakala
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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