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JPL Small-Body Database Browser
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39470 (1978 UB7)
Classification: Main-belt Asteroid          SPK-ID: 2039470
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1841282965160281 5.335e-08  
a 2.696837549880708 1.9297e-08 au
q 2.200273445840714 1.5019e-07 au
i 14.2702595416247 5.1451e-06 deg
node 12.38445242324813 2.3564e-05 deg
peri 91.6584610887916 2.9048e-05 deg
M 78.8923066773403 1.5236e-05 deg
tp 2458646.002840059179
(2019-Jun-11.50284006)
6.7323e-05 TDB
period 1617.63526703106
4.43
1.7362e-05
4.753e-08
d
yr
n .2225470767960745 2.3886e-09 deg/d
Q 3.193401653920702 2.285e-08 au
  Orbit Determination Parameters
   # obs. used (total)      437  
   data-arc span      15047 days (41.20 yr)  
   first obs. used      1978-10-27  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6213  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 05:49:42  

Additional Information
 Earth MOID = 1.27074 au 
 Jupiter MOID = 2.10231 au 
 T_jup = 3.301 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456893.5 (2014-Aug-24.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1842145828192646 5.3593e-08  
q 2.200216843828517 1.5094e-07 au
tp 2457030.091056330800
(2015-Jan-07.59105633)
6.46e-05 TDB
node 12.41853156457205 2.3579e-05 deg
peri 92.12698032902648 2.9022e-05 deg
i 14.26579162534958 5.143e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      437  
   data-arc span      15047 days (41.20 yr)  
   first obs. used      1978-10-27  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6213  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 05:49:42  

Additional Information
 Jupiter MOID = 2.10231 au 
 T_jup = 3.301 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.872157359026918E-15 -8.050670728502187E-15 1.134422321802103E-13 -1.845870956630209E-15 8.466074204811744E-14 -2.26647693508032E-14
q -8.050670728502187E-15 2.278203721292088E-14 -3.038888601683001E-13 6.251421602307573E-15 -2.412802935223556E-13 6.562428755665444E-14
tp 1.134422321802103E-13 -3.038888601683001E-13 4.173115622368921E-9 -9.068922210681232E-12 1.12756386372364E-9 1.168168020232297E-12
node -1.845870956630209E-15 6.251421602307573E-15 -9.068922210681232E-12 5.559743242563378E-10 -5.408498913718817E-10 9.604357138882063E-12
peri 8.466074204811744E-14 -2.412802935223556E-13 1.12756386372364E-9 -5.408498913718817E-10 8.422746531605216E-10 -9.437193171663276E-12
i -2.26647693508032E-14 6.562428755665444E-14 1.168168020232297E-12 9.604357138882063E-12 -9.437193171663276E-12 2.645004992025663E-11

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 15.5   n/a MPO319561  

39470 (1978 UB7)          Discovered 1978-Oct-27 by Olmstead, C. M. at Palomar
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1978 UB7 = 2000 SY32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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