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JPL Small-Body Database Browser
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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 | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08036728303426449 4.6618e-08  
a 3.051674180591722 2.3095e-08 au
q 2.80641941799175 1.4087e-07 au
i 11.06100563151322 4.5592e-06 deg
node 114.4125623255751 3.0296e-05 deg
peri 292.2179010229301 4.534e-05 deg
M 136.1868724681223 3.4185e-05 deg
tp 2458263.888631257896
(2018-May-25.38863126)
0.00018392 TDB
period 1947.178079217796
5.33
2.2104e-05
6.052e-08
d
yr
n .1848829358969654 2.0988e-09 deg/d
Q 3.296928943191694 2.4951e-08 au
  Orbit Determination Parameters
   # obs. used (total)      943  
   data-arc span      6833 days (18.71 yr)  
   first obs. used      2001-08-11  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54566  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 18:58:47  

Additional Information
 Earth MOID = 1.84046 au 
 Jupiter MOID = 2.01535 au 
 T_jup = 3.203 
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Orbital Elements at Epoch 2456765.5 (2014-Apr-18.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07991786290510185 4.6102e-08  
q 2.810543875055978 1.3962e-07 au
tp 2456324.546508936656
(2013-Feb-01.04650894)
0.00018627 TDB
node 114.4328962118858 3.0277e-05 deg
peri 293.9449271271732 4.5708e-05 deg
i 11.0614918753291 4.5584e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      943  
   data-arc span      6833 days (18.71 yr)  
   first obs. used      2001-08-11  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54566  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 18:58:47  

Additional Information
 Jupiter MOID = 2.01535 au 
 T_jup = 3.203 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.125383586947584E-15 -6.363327320459936E-15 -3.169912548539838E-12 4.70349738310109E-15 -6.214184455598739E-13 1.398477280677839E-15
q -6.363327320459936E-15 1.949412875564111E-14 9.497759816445236E-12 -1.596501993110069E-14 1.878423316874597E-12 -3.670777168246543E-15
tp -3.169912548539838E-12 9.497759816445236E-12 3.469474749703301E-8 -2.928544196964909E-11 6.433979720487995E-9 -4.13674590585395E-12
node 4.70349738310109E-15 -1.596501993110069E-14 -2.928544196964909E-11 9.166758927142143E-10 -9.051097028491132E-10 4.033464904718408E-11
peri -6.214184455598739E-13 1.878423316874597E-12 6.433979720487995E-9 -9.051097028491132E-10 2.089253225455977E-9 -4.039462190089143E-11
i 1.398477280677839E-15 -3.670777168246543E-15 -4.13674590585395E-12 4.033464904718408E-11 -4.039462190089143E-11 2.077880037525649E-11

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 14.2   n/a MPO338035  
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. 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.]
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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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