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102531 (1999 UP4)
Classification: Main-belt Asteroid          SPK-ID: 2102531
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2115725742246742 3.6919e-08  
a 2.363674246144174 8.8326e-09 au
q 1.863585601258885 8.992e-08 au
i 2.688043993523979 4.012e-06 deg
node 16.4626944187986 8.4597e-05 deg
peri 357.5932334985234 8.5123e-05 deg
M 302.2077303386424 1.0851e-05 deg
tp 2459413.582170413425
(2021-Jul-18.08217041)
4.0696e-05 TDB
period 1327.332907987941
3.63
7.44e-06
2.037e-08
d
yr
n .2712205791278932 1.5203e-09 deg/d
Q 2.863762891029463 1.0701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      863  
   data-arc span      8542 days (23.39 yr)  
   first obs. used      1997-02-03  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51192  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:54:13  

Additional Information
 Earth MOID = .862921 au 
 Jupiter MOID = 2.60162 au 
 T_jup = 3.517 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.08   n/a E2021B55  
diameter diameter 1.461 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.361   0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102531 (1999 UP4)          Discovered 1999-Oct-31 by Sarounova, L. at Ondrejov
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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