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78757 (2002 UM)
Classification: Main-belt Asteroid          SPK-ID: 2078757
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03073364546894822 4.437e-08  
a 2.634023682131702 1.6056e-08 au
q 2.553070532128253 1.2136e-07 au
i 22.81838275325315 5.0299e-06 deg
node 106.635127484038 1.2991e-05 deg
peri 320.2666668661889 9.23e-05 deg
M 7.810601280072203 8.9695e-05 deg
tp 2458966.622612843122
(2020-Apr-27.12261284)
0.00038907 TDB
period 1561.449488862327
4.28
1.4277e-05
3.909e-08
d
yr
n .2305550083866602 2.1081e-09 deg/d
Q 2.714976832135151 1.655e-08 au
  Orbit Determination Parameters
   # obs. used (total)      919  
   data-arc span      7982 days (21.85 yr)  
   first obs. used      1998-12-19  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55632  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:38  

Additional Information
 Earth MOID = 1.58358 au 
 Jupiter MOID = 2.45931 au 
 T_jup = 3.286 
[ 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 14.6   n/a MPO502631  
diameter diameter 3.805 km 0.525 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.369   0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78757 (2002 UM)          Discovered 2002-Oct-22 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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