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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .270015589745917 4.2544e-08  
a 3.100167603982848 2.12e-08 au
q 2.263074020082233 1.2871e-07 au
i 12.85608264698541 4.1586e-06 deg
node 147.2334292488871 2.2842e-05 deg
peri 290.7393716460909 2.4104e-05 deg
M 263.12903250636 8.204e-06 deg
tp 2459736.997032197788
(2022-Jun-06.49703220)
4.7673e-05 TDB
period 1993.775189701538
5.46
2.0451e-05
5.599e-08
d
yr
n .180561982042665 1.8521e-09 deg/d
Q 3.937261187883463 2.6924e-08 au
  Orbit Determination Parameters
   # obs. used (total)      702  
   data-arc span      7647 days (20.94 yr)  
   first obs. used      1999-08-09  
   last obs. used      2020-07-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51657  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:14  

Additional Information
 Earth MOID = 1.31527 au 
 Jupiter MOID = 1.5514 au 
 T_jup = 3.128 
[ 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 14.53   n/a E2021B55  
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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