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JPL Small-Body Database Browser
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160875 (2001 OQ21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2160875
[ 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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1492429959558368 8.1921e-08  
a 3.407634339338678 5.025e-08 au
q 2.899068781413785 2.5715e-07 au
i 16.41687059227526 9.4556e-06 deg
node 337.326591576997 2.014e-05 deg
peri 59.05361843651292 3.8055e-05 deg
M 313.8487040791086 3.2478e-05 deg
tp 2459295.050188932321
(2021-Mar-21.55018893)		 0.00020935 TDB
period 2297.618428687181
6.29		 5.0822e-05
1.391e-07		 d
yr
n .1566839800313134 3.4657e-09 deg/d
Q 3.916199897263571 5.7749e-08 au
   Orbit Determination Parameters
   # obs. used (total)      494  
   data-arc span      5760 days (15.77 yr)  
   first obs. used      2001-07-21  
   last obs. used      2017-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55266  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 06:33:15  

Additional Information
 Earth MOID = 1.94361 au 
 Jupiter MOID = 1.76422 au 
 T_jup = 3.062 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456617.5 (2013-Nov-21.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1514454909861646 8.6963e-08  
q 2.890549129222662 2.8053e-07 au
tp 2456972.771351651231
(2014-Nov-11.27135165)		 0.00018737 TDB
node 338.0956979531496 2.0105e-05 deg
peri 55.23983526028119 3.7215e-05 deg
i 16.49875726342753 9.4511e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      494  
   data-arc span      5760 days (15.77 yr)  
   first obs. used      2001-07-21  
   last obs. used      2017-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55266  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 06:33:15  

Additional Information
 Jupiter MOID = 1.76422 au 
 T_jup = 3.062 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.562621785869178E-15 -2.419767287069311E-14 -3.272293953719556E-12 9.977716388361173E-15 -1.072866558268957E-12 -6.222636805017926E-15
q -2.419767287069311E-14 7.86960894750611E-14 1.328021993712143E-11 -4.926208819264804E-14 3.846120727018526E-12 2.883745337446855E-14
tp -3.272293953719556E-12 1.328021993712143E-11 3.510718352037341E-8 -4.126408330917997E-11 5.771212069667183E-9 -4.300841144759009E-11
node 9.977716388361173E-15 -4.926208819264804E-14 -4.126408330917997E-11 4.042260085521461E-10 -3.946844838547753E-10 -2.59382150361298E-11
peri -1.072866558268957E-12 3.846120727018526E-12 5.771212069667183E-9 -3.946844838547753E-10 1.38498995021841E-9 1.881109687128784E-11
i -6.222636805017926E-15 2.883745337446855E-14 -4.300841144759009E-11 -2.59382150361298E-11 1.881109687128784E-11 8.932260979407734E-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 14.0   n/a MPO366954  
diameter diameter 8.159 km 0.436 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160875 (2001 OQ21)          Discovered 2001-Jul-21 by LONEOS at Anderson Mesa
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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