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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04430167764416065 5.9844e-08  
a 2.575773103489952 2.1943e-08 au
q 2.461662033774641 1.6267e-07 au
i 8.390105295332019 6.2818e-06 deg
node 207.1117477580193 2.7988e-05 deg
peri 161.049336656206 6.2648e-05 deg
M 54.15098038843843 5.277e-05 deg
tp 2458773.375671758441
(2019-Oct-16.87567176)
0.00022213 TDB
period 1509.94049563724
4.13
1.9294e-05
5.282e-08
d
yr
n .2384199914103696 3.0466e-09 deg/d
Q 2.689884173205264 2.2915e-08 au
  Orbit Determination Parameters
   # obs. used (total)      277  
   data-arc span      6704 days (18.35 yr)  
   first obs. used      2002-06-15  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57434  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:13:34  

Additional Information
 Earth MOID = 1.46295 au 
 Jupiter MOID = 2.49537 au 
 T_jup = 3.411 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457675.5 (2016-Oct-14.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04516751625957147 5.9759e-08  
q 2.458796904734806 1.6238e-07 au
tp 2457255.056296883143
(2015-Aug-20.55629688)
0.00022484 TDB
node 207.1351316117901 2.797e-05 deg
peri 159.0693389245057 6.195e-05 deg
i 8.392456009702029 6.2859e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      277  
   data-arc span      6704 days (18.35 yr)  
   first obs. used      2002-06-15  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57434  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:13:34  

Additional Information
 Jupiter MOID = 2.49537 au 
 T_jup = 3.411 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.571168366706779E-15 -9.632450845771812E-15 3.565302626856015E-12 -6.111362936289017E-15 8.553100538386833E-13 4.780703449675852E-15
q -9.632450845771812E-15 2.636765557655865E-14 -1.088740683602764E-11 1.693030951623476E-14 -2.601627822608108E-12 -1.241773969084975E-14
tp 3.565302626856015E-12 -1.088740683602764E-11 5.055436530708096E-8 -4.654023145578032E-11 1.243761224251074E-8 5.167517607049273E-12
node -6.111362936289017E-15 1.693030951623476E-14 -4.654023145578032E-11 7.823154768588786E-10 -7.848442545694197E-10 -1.899734193184196E-11
peri 8.553100538386833E-13 -2.601627822608108E-12 1.243761224251074E-8 -7.848442545694197E-10 3.837773015000374E-9 1.997427639680205E-11
i 4.780703449675852E-15 -1.241773969084975E-14 5.167517607049273E-12 -1.899734193184196E-11 1.997427639680205E-11 3.951310449890919E-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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