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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2022402538295192 7.8072e-08  
a 3.923737118205722 8.3641e-08 au
q 3.130199527459491 2.9129e-07 au
i 1.762880745768515 7.9578e-06 deg
node 280.3657037339098 0.00026745 deg
peri 161.5841735439591 0.00026829 deg
M 154.44490854898 2.1416e-05 deg
tp 2457782.578277974310
(2017-Jan-29.07827797)
0.00015358 TDB
period 2838.888144960762
7.77
9.0773e-05
2.485e-07
d
yr
n .1268102093557391 4.0547e-09 deg/d
Q 4.717274708951954 1.0056e-07 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57944  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:48:23  

Additional Information
 Earth MOID = 2.1462 au 
 Jupiter MOID = .544354 au 
 T_jup = 3.026 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457765.5 (2017-Jan-12.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2042362042060543 7.8085e-08  
q 3.120431103757418 2.9164e-07 au
tp 2457783.880355066380
(2017-Jan-30.38035507)
0.00015181 TDB
node 280.3902317487841 0.00026777 deg
peri 161.4051977721617 0.00026857 deg
i 1.762408450790989 7.9567e-06 deg
  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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57944  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:48:23  

Additional Information
 Jupiter MOID = .544354 au 
 T_jup = 3.026 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.097240116997794E-15 -2.222460289699128E-14 -1.057321095123438E-12 -3.029711115789819E-14 -3.148544715450141E-13 -2.904734287188059E-16
q -2.222460289699128E-14 8.505271761294016E-14 6.748040007471627E-12 1.133596042888567E-13 1.50834230531579E-12 1.448229814079143E-15
tp -1.057321095123438E-12 6.748040007471627E-12 2.304696059061065E-8 3.290812977656683E-11 3.270430656594944E-9 -1.105107684140749E-12
node -3.029711115789819E-14 1.133596042888567E-13 3.290812977656683E-11 7.16988011708391E-8 -7.165905687786141E-8 -2.062982184523924E-10
peri -3.148544715450141E-13 1.50834230531579E-12 3.270430656594944E-9 -7.165905687786141E-8 7.213224396150907E-8 2.060719241986839E-10
i -2.904734287188059E-16 1.448229814079143E-15 -1.105107684140749E-12 -2.062982184523924E-10 2.060719241986839E-10 6.33087329971303E-11

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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