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146991 (2002 PD44)
Classification: Main-belt Asteroid          SPK-ID: 2146991
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2143622866494761 3.8401e-08  
a 2.285914140685532 8.3782e-09 au
q 1.795900358403809 9.059e-08 au
i 2.856382462187955 4.4658e-06 deg
node 333.8414012097059 9.2308e-05 deg
peri 38.23071154145637 9.2931e-05 deg
M 38.95900202424687 1.1624e-05 deg
tp 2458863.886499103771
(2020-Jan-15.38649910)
4.0504e-05 TDB
period 1262.374746972054
3.46
6.9402e-06
1.9e-08
d
yr
n .2851768073335591 1.5678e-09 deg/d
Q 2.775927922967255 1.0174e-08 au
  Orbit Determination Parameters
   # obs. used (total)      667  
   data-arc span      20146 days (55.16 yr)  
   first obs. used      1964-10-09  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5239  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 11:39:00  

Additional Information
 Earth MOID = .796981 au 
 Jupiter MOID = 2.69491 au 
 T_jup = 3.569 
[ 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 16.0   n/a MPO436738  
diameter diameter 2.122 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.156   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146991 (2002 PD44)          Discovered 2002-Aug-05 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Alternate Designations
 2002 PD44 = 1964 TZ1 = 2000 AT160 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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