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105239 (2000 PD21)
Classification: Main-belt Asteroid          SPK-ID: 2105239
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1157907386852909 3.5116e-08  
a 2.937032901683222 2.0343e-08 au
q 2.596951692454318 1.0768e-07 au
i 1.888758877074509 4.039e-06 deg
node 188.6519336981235 0.0001303 deg
peri 167.2925955090823 0.00013169 deg
M 304.8710590435738 2.0779e-05 deg
tp 2459282.039148800472
(2021-Mar-08.53914880)
0.00010746 TDB
period 1838.49157647124
5.03
1.9101e-05
5.23e-08
d
yr
n .1958127002632104 2.0344e-09 deg/d
Q 3.277114110912126 2.2699e-08 au
  Orbit Determination Parameters
   # obs. used (total)      676  
   data-arc span      8763 days (23.99 yr)  
   first obs. used      1995-06-03  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50413  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 02:19:13  

Additional Information
 Earth MOID = 1.59247 au 
 Jupiter MOID = 2.15854 au 
 T_jup = 3.263 
[ 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 15.3   n/a MPO436496  
rotation period rot_per 1.15 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

105239 (2000 PD21)          Discovered 2000-Aug-01 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2000 PD21 = 2001 XA128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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