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JPL Small-Body Database Browser
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2817 Perec (1982 UJ)
Classification: Main-belt Asteroid          SPK-ID: 2002817
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1786410141325459 3.6514e-08  
a 2.357722660147787 6.8662e-09 au
q 1.936536693095702 8.6676e-08 au
i 2.273242777730854 3.0613e-06 deg
node 254.7125179497351 0.00010417 deg
peri 97.42334842111866 0.00010448 deg
M 161.5403601419043 9.3446e-06 deg
tp 2458407.143028764673
(2018-Oct-15.64302876)
3.3635e-05 TDB
period 1322.322851435235
3.62
5.7764e-06
1.581e-08
d
yr
n .2722481878077354 1.1893e-09 deg/d
Q 2.778908627199872 8.0928e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2008  
   data-arc span      24311 days (66.56 yr)  
   first obs. used      1953-10-07  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48071  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:45:25  

Additional Information
 Earth MOID = .932634 au 
 Jupiter MOID = 2.65897 au 
 T_jup = 3.531 
[ 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 14.0   n/a MPO502180  
diameter diameter 10.138 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2817 Perec (1982 UJ)          Discovered 1982-Oct-17 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1982 UJ = 1953 TF2 = 1953 TU = 1964 VH1 = 1971 TL1 = 1975 VQ1 = 1975 XW1 = 1978 NF2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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