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150312 (1999 UR28)
Classification: Main-belt Asteroid          SPK-ID: 2150312
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02458376563047827 4.7073e-08  
a 3.054005602145101 2.5778e-08 au
q 2.978926644187798 1.5528e-07 au
i 1.949539242316408 4.0332e-06 deg
node 68.85493009488304 0.00021219 deg
peri 19.42477598133907 0.00027603 deg
M 277.3068154621855 0.00017823 deg
tp 2459648.285872096962
(2022-Mar-09.78587210)
0.00096726 TDB
period 1949.409916378177
5.34
2.4682e-05
6.758e-08
d
yr
n .1846712674309397 2.3382e-09 deg/d
Q 3.129084560102404 2.6412e-08 au
  Orbit Determination Parameters
   # obs. used (total)      287  
   data-arc span      9504 days (26.02 yr)  
   first obs. used      1994-10-13  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60847  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 13:53:08  

Additional Information
 Earth MOID = 1.99498 au 
 Jupiter MOID = 1.90846 au 
 T_jup = 3.235 
[ 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 16.19   n/a E2021B55  
diameter diameter 3.676 km 0.575 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.043   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

150312 (1999 UR28)          Discovered 1999-Oct-31 by Spacewatch at Kitt Peak
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

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