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305052 (2007 US42)
Classification: Main-belt Asteroid          SPK-ID: 2305052
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04407719001342836 6.7249e-08  
a 2.575220929032345 2.4643e-08 au
q 2.461712426816829 1.8546e-07 au
i 8.39098846145786 6.6149e-06 deg
node 207.1126256340872 2.9256e-05 deg
peri 160.8486323971729 6.6699e-05 deg
M 318.953878699771 5.6406e-05 deg
tp 2458772.603534760115
(2019-Oct-16.10353476)
0.00023568 TDB
period 1509.454987487351
4.13
2.1667e-05
5.932e-08
d
yr
n .2384966779296006 3.4234e-09 deg/d
Q 2.688729431247861 2.5729e-08 au
  Orbit Determination Parameters
   # obs. used (total)      259  
   data-arc span      6343 days (17.37 yr)  
   first obs. used      2002-06-15  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5625  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 07:37:36  

Additional Information
 Earth MOID = 1.46214 au 
 Jupiter MOID = 2.49614 au 
 T_jup = 3.411 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457450.5 (2016-Mar-03.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04525221849743752 6.7058e-08  
q 2.458848846034998 1.8509e-07 au
tp 2457255.514647927503
(2015-Aug-21.01464793)
0.00023894 TDB
node 207.134201047119 2.9239e-05 deg
peri 159.1848052882107 6.57e-05 deg
i 8.39231775094712 6.6186e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      259  
   data-arc span      6343 days (17.37 yr)  
   first obs. used      2002-06-15  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5625  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 07:37:36  

Additional Information
 Jupiter MOID = 2.49614 au 
 T_jup = 3.411 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.496742718758696E-15 -1.233333094502765E-14 5.793450103331642E-12 -1.741342460053783E-14 1.423749830432634E-12 6.361917601869511E-15
q -1.233333094502765E-14 3.425761033473228E-14 -1.727785883006193E-11 4.873200595556847E-14 -4.233669363069888E-12 -1.67868175266209E-14
tp 5.793450103331642E-12 -1.727785883006193E-11 5.709146358935933E-8 -6.917301760790414E-11 1.40695572302149E-8 8.583853378816207E-12
node -1.741342460053783E-14 4.873200595556847E-14 -6.917301760790414E-11 8.549364015530355E-10 -8.622231632191356E-10 -2.398550639660449E-11
peri 1.423749830432634E-12 -4.233669363069888E-12 1.40695572302149E-8 -8.622231632191356E-10 4.3164940280602E-9 2.574571630585005E-11
i 6.361917601869511E-15 -1.67868175266209E-14 8.583853378816207E-12 -2.398550639660449E-11 2.574571630585005E-11 4.380575865792015E-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 16.7   n/a MPO450226  

305052 (2007 US42)          Discovered 2007-Oct-16 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2007 US42 = 2003 XG27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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