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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .202240240957815 7.8939e-08  
a 3.923737106110141 8.4299e-08 au
q 3.130199568315306 2.9369e-07 au
i 1.762882704288348 8.2911e-06 deg
node 280.3658061107022 0.00029461 deg
peri 161.5840898487569 0.00029581 deg
M 154.4448960745773 2.4232e-05 deg
tp 2457782.578381976633
(2017-Jan-29.07838198)
0.00018022 TDB
period 2838.888131833736
7.77
9.1488e-05
2.505e-07
d
yr
n .1268102099421098 4.0867e-09 deg/d
Q 4.717274643904975 1.0135e-07 au
  Orbit Determination Parameters
   # obs. used (total)      117  
   data-arc span      6295 days (17.23 yr)  
   first obs. used      2002-01-13  
   last obs. used      2019-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 16:41:58  

Additional Information
 Earth MOID = 2.1462 au 
 Jupiter MOID = .544354 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 15.8   n/a MPO437321  
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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