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160281 (2002 WO)
Classification: Inner Main-belt Asteroid          SPK-ID: 2160281
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1094170084146098 4.3242e-08  
a 1.924043780698718 7.6252e-09 au
q 1.713520666155928 8.3475e-08 au
i 17.5207168617709 6.5467e-06 deg
node 276.8422928127968 1.4083e-05 deg
peri 140.091589378321 3.3499e-05 deg
M 309.0549802688714 2.9878e-05 deg
tp 2459338.449485750149
(2021-May-03.94948575)
8.1208e-05 TDB
period 974.8119665504669
2.67
5.7949e-06
1.587e-08
d
yr
n .3693019908997624 2.1954e-09 deg/d
Q 2.134566895241507 8.4595e-09 au
  Orbit Determination Parameters
   # obs. used (total)      621  
   data-arc span      7784 days (21.31 yr)  
   first obs. used      1999-09-22  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54104  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:00:41  

Additional Information
 Earth MOID = .750899 au 
 Jupiter MOID = 3.13171 au 
 T_jup = 3.857 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457762.5 (2017-Jan-09.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1097253988721544 4.3301e-08  
q 1.713167174655264 8.3649e-08 au
tp 2457388.510703034009
(2016-Jan-01.01070303)
7.7332e-05 TDB
node 276.8620668462678 1.4084e-05 deg
peri 140.0391967537846 3.3391e-05 deg
i 17.51919232673585 6.5462e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      621  
   data-arc span      7784 days (21.31 yr)  
   first obs. used      1999-09-22  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54104  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:00:41  

Additional Information
 Jupiter MOID = 3.13171 au 
 T_jup = 3.857 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.874947405822486E-15 -3.610225359706435E-15 1.229065423626755E-12 -3.366332525184907E-15 5.087071006231855E-13 -9.355416701254491E-15
q -3.610225359706435E-15 6.997214698574949E-15 -2.242685004383014E-12 6.646795616860758E-15 -9.272746568158511E-13 1.895801728451516E-14
tp 1.229065423626755E-12 -2.242685004383014E-12 5.98022515671287E-9 1.135981845000365E-11 2.348079874902356E-9 2.679371089084637E-11
node -3.366332525184907E-15 6.646795616860758E-15 1.135981845000365E-11 1.9836861343589E-10 -1.841109979608767E-10 1.149506073005548E-11
peri 5.087071006231855E-13 -9.272746568158511E-13 2.348079874902356E-9 -1.841109979608767E-10 1.114928166145255E-9 -9.109031359826695E-13
i -9.355416701254491E-15 1.895801728451516E-14 2.679371089084637E-11 1.149506073005548E-11 -9.109031359826695E-13 4.285310515762774E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.54   n/a MPCxxxxx  
rotation period rot_per 305.371 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

160281 (2002 WO)          Discovered 2002-Nov-21 by NEAT at Palomar
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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