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7993 (1982 UD2)
Classification: Main-belt Asteroid          SPK-ID: 2007993
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .134207670596236 8.0715e-08  
a 2.923770502016293 1.9662e-08 AU
q 2.531378073582699 2.3746e-07 AU
i 2.594773766808523 6.6128e-06 deg
node 42.60238195976909 9.872e-05 deg
peri 329.6667654806131 0.00010044 deg
M 170.6134589289943 1.9698e-05 deg
tp 2456135.085566598535
(2012-Jul-26.58556660)
9.7558e-05 JED
period 1826.052868163159
5.00
1.842e-05
5.043e-08
d
yr
n .1971465373629225 1.9887e-09 deg/d
Q 3.316162930449888 2.2301e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1541  
   data-arc span      11935 days (32.68 yr)  
   first obs. used      1982-10-16  
   last obs. used      2015-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52215  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:58:18  

Additional Information
 Earth MOID = 1.53204 AU 
 T_jup = 3.264 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5 mag n/a MPO337323  

7993 (1982 UD2)          Discovered 1982-Oct-16 by Mrkos, A. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1982 UD2 = 1987 UF 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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