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70685 (1999 UR12)
Classification: Main-belt Asteroid          SPK-ID: 2070685
[ 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 .1666411279839427 5.5517e-08  
a 2.611451477176351 1.1103e-08 au
q 2.17627625734435 1.4872e-07 au
i 15.11739134350893 8.1129e-06 deg
node 13.471281364141 1.293e-05 deg
peri 36.40546649514028 2.4371e-05 deg
M 292.5811751892056 1.9378e-05 deg
tp 2459289.168931814205
(2021-Mar-15.66893181)		 8.3225e-05 TDB
period 1541.42134255172
4.22		 9.8301e-06
2.691e-08		 d
yr
n .2335506782357405 1.4894e-09 deg/d
Q 3.046626697008352 1.2953e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1405  
   data-arc span      10094 days (27.64 yr)  
   first obs. used      1993-03-26  
   last obs. used      2020-11-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45841  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:05:42  

Additional Information
 Earth MOID = 1.20122 au 
 Jupiter MOID = 2.45813 au 
 T_jup = 3.341 
[ 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 14.3   n/a MPO439540  
diameter diameter 4.688 km 0.223 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.153   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70685 (1999 UR12)          Discovered 1999-Oct-29 by CSS at Catalina
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 UR12 = 1993 HC9 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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