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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .044301690186316 6.6914e-08  
a 2.575773099384505 2.403e-08 au
q 2.461661997545326 1.8422e-07 au
i 8.390103898077935 6.6047e-06 deg
node 207.1117497589846 2.8129e-05 deg
peri 161.0493424492525 6.5602e-05 deg
M 54.15097390706865 5.5158e-05 deg
tp 2458773.375699486125
(2019-Oct-16.87569949)
0.00023249 TDB
period 1509.940492027267
4.13
2.113e-05
5.785e-08
d
yr
n .2384199919803853 3.3364e-09 deg/d
Q 2.689884201223684 2.5095e-08 au
  Orbit Determination Parameters
   # obs. used (total)      269  
   data-arc span      6434 days (17.62 yr)  
   first obs. used      2002-06-15  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57532  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:52:37  

Additional Information
 Earth MOID = 1.46295 au 
 Jupiter MOID = 2.49537 au 
 T_jup = 3.411 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457571.5 (2016-Jul-02.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04520144829122218 6.6666e-08  
q 2.45879557553106 1.8357e-07 au
tp 2457255.230741542513
(2015-Aug-20.73074154)
0.00023837 TDB
node 207.135015269372 2.811e-05 deg
peri 159.1117712594022 6.5074e-05 deg
i 8.392432717563706 6.6092e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      269  
   data-arc span      6434 days (17.62 yr)  
   first obs. used      2002-06-15  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57532  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:52:37  

Additional Information
 Jupiter MOID = 2.49537 au 
 T_jup = 3.411 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.444403589822757E-15 -1.216278821145581E-14 5.910846218146974E-12 -8.559335149100345E-15 1.440419984346279E-12 6.382768691195863E-15
q -1.216278821145581E-14 3.369873716415187E-14 -1.768443832337513E-11 2.376144346176108E-14 -4.296981711258073E-12 -1.687066534413324E-14
tp 5.910846218146974E-12 -1.768443832337513E-11 5.682182210938934E-8 -5.171465810925992E-11 1.399955439484626E-8 8.510061717684012E-12
node -8.559335149100345E-15 2.376144346176108E-14 -5.171465810925992E-11 7.901562861507672E-10 -7.93872014411346E-10 -2.469313691880353E-11
peri 1.440419984346279E-12 -4.296981711258073E-12 1.399955439484626E-8 -7.93872014411346E-10 4.234665115673235E-9 2.642890929049887E-11
i 6.382768691195863E-15 -1.687066534413324E-14 8.510061717684012E-12 -2.469313691880353E-11 2.642890929049887E-11 4.368148889561072E-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

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