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101894 (1999 PD2)
Classification: Main-belt Asteroid          SPK-ID: 2101894
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2709305170787448 4.3163e-08  
a 3.103205690707775 1.9604e-08 au
q 2.262452568322614 1.315e-07 au
i 12.80795546475657 4.241e-06 deg
node 147.3581823949122 2.2983e-05 deg
peri 290.2797897456144 2.4204e-05 deg
M 227.6117344767598 8.0104e-06 deg
tp 2459734.779262317956
(2022-Jun-04.27926232)
4.7565e-05 TDB
period 1996.706682346105
5.47
1.8921e-05
5.18e-08
d
yr
n .1802968874612091 1.7085e-09 deg/d
Q 3.943958813092936 2.4915e-08 au
  Orbit Determination Parameters
   # obs. used (total)      694  
   data-arc span      7647 days (20.94 yr)  
   first obs. used      1999-08-09  
   last obs. used      2020-07-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51865  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:56  

Additional Information
 Earth MOID = 1.31496 au 
 Jupiter MOID = 1.54881 au 
 T_jup = 3.127 
[ 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 14.5   n/a MPO436476  
diameter diameter 7.305 km 0.223 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101894 (1999 PD2)          Discovered 1999-Aug-09 by Comba, P. G. at Prescott
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 PD2 = 2001 BJ55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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