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295719 (2008 UD40)
Classification: Outer Main-belt Asteroid          SPK-ID: 2295719
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2016231928236625 7.8302e-08  
a 3.92556096119841 8.3147e-08 au
q 3.134076826577661 2.9295e-07 au
i 1.762483731185369 7.9563e-06 deg
node 280.3715596236261 0.00026745 deg
peri 161.5211703254991 0.0002683 deg
M 179.896693772114 2.1886e-05 deg
tp 2457780.881347650575
(2017-Jan-27.38134765)
0.00015355 TDB
period 2840.867745424976
7.78
9.0258e-05
2.471e-07
d
yr
n .1267218442603516 4.0261e-09 deg/d
Q 4.717045095819159 9.9912e-08 au
  Orbit Determination Parameters
   # obs. used (total)      125  
   data-arc span      6735 days (18.44 yr)  
   first obs. used      2002-01-13  
   last obs. used      2020-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57944  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 05:15:38  

Additional Information
 Earth MOID = 2.1497 au 
 Jupiter MOID = .545134 au 
 T_jup = 3.026 
[ 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 16.00   n/a E2021B55  
diameter diameter 4.390 km 0.437 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.033   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

295719 (2008 UD40)          Discovered 2008-Oct-20 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ show close-approach data ]
Alternate Designations
 2008 UD40 = 2007 RT78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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