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187956 (2001 OA49)
Classification: Main-belt Asteroid          SPK-ID: 2187956
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2026473483077425 3.1909e-08  
a 2.414621304103781 9.3523e-09 au
q 1.925304699659766 7.5703e-08 au
i 10.94994848150012 4.9391e-06 deg
node 313.4008914390304 2.5583e-05 deg
peri 328.1206571569496 3.037e-05 deg
M 93.4116667152077 1.6999e-05 deg
tp 2458844.892764158745
(2019-Dec-27.39276416)
6.3907e-05 TDB
period 1370.477686616528
3.75
7.9622e-06
2.18e-08
d
yr
n .2626821315776237 1.5261e-09 deg/d
Q 2.903937908547795 1.1248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      898  
   data-arc span      12517 days (34.27 yr)  
   first obs. used      1986-10-04  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49702  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:30  

Additional Information
 Earth MOID = .916159 au 
 Jupiter MOID = 2.30748 au 
 T_jup = 3.465 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457638.5 (2016-Sep-07.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2022031113038469 3.1901e-08  
q 1.927041667647815 7.5724e-08 au
tp 2457474.445905144903
(2016-Mar-26.94590514)
6.1617e-05 TDB
node 313.4325533130042 2.5596e-05 deg
peri 328.2442284601245 3.0402e-05 deg
i 10.94533273458162 4.9377e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      898  
   data-arc span      12517 days (34.27 yr)  
   first obs. used      1986-10-04  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49702  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:30  

Additional Information
 Jupiter MOID = 2.30748 au 
 T_jup = 3.465 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.017666808047447E-15 -2.4044929799506E-15 8.155030977544164E-13 -5.040559609926474E-15 1.916760537999287E-13 -8.444677837246575E-16
q -2.4044929799506E-15 5.734186311537615E-15 -1.85459734529761E-12 9.745216068897664E-15 -4.303690435065149E-13 1.54391648185098E-15
tp 8.155030977544164E-13 -1.85459734529761E-12 3.796605167750289E-9 -2.75866581397017E-11 1.037573431929256E-9 -1.04028280029494E-11
node -5.040559609926474E-15 9.745216068897664E-15 -2.75866581397017E-11 6.551578192688371E-10 -6.506145817603282E-10 7.454492527777777E-11
peri 1.916760537999287E-13 -4.303690435065149E-13 1.037573431929256E-9 -6.506145817603282E-10 9.242956646952108E-10 -7.609222929794544E-11
i -8.444677837246575E-16 1.54391648185098E-15 -1.04028280029494E-11 7.454492527777777E-11 -7.609222929794544E-11 2.438120744402356E-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 15.59   n/a MPCxxxxx  

187956 (2001 OA49)          Discovered 2001-Jul-16 by NEAT at Haleakala
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

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