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442742 (2012 WP3)
Classification: Amor [NEO]          SPK-ID: 2442742
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 114 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3840782457612797 1.0964e-07  
a 2.099743341993848 1.8506e-08 au
q 1.293277602651924 2.2894e-07 au
i 22.5669816328308 8.8762e-06 deg
node 227.1824625012903 8.2833e-06 deg
peri 141.6653202131539 4.3461e-05 deg
M 200.5565157644025 1.5979e-05 deg
tp 2459492.711800636496
(2021-Oct-05.21180064)
4.5052e-05 TDB
period 1111.342047488808
3.04
1.4692e-05
4.022e-08
d
yr
n .3239326729457029 4.2824e-09 deg/d
Q 2.906209081335772 2.5613e-08 au
  Orbit Determination Parameters
   # obs. used (total)      747  
   data-arc span      3229 days (8.84 yr)  
   first obs. used      2010-03-22  
   last obs. used      2019-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .34179  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-31 08:22:45  

Additional Information
 Earth MOID = .348937 au 
 Jupiter MOID = 2.69899 au 
 T_jup = 3.561 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457696.5 (2016-Nov-04.0) TDB
Reference: JPL 114 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3842110860216598 1.1116e-07  
q 1.293614300841494 2.3277e-07 au
tp 2457268.441415724835
(2015-Sep-02.94141572)
6.6522e-05 TDB
node 227.2299009389534 8.2812e-06 deg
peri 141.5038291081579 4.3388e-05 deg
i 22.54107769699656 8.8753e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      747  
   data-arc span      3229 days (8.84 yr)  
   first obs. used      2010-03-22  
   last obs. used      2019-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .34179  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-31 08:22:45  

Additional Information
 Jupiter MOID = 2.69899 au 
 T_jup = 3.561 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.235589294991082E-14 -2.584693197859556E-14 -3.676177829518178E-12 -3.043894272498405E-13 -3.271427265703004E-12 -1.671340778704338E-13
q -2.584693197859556E-14 5.418163617145349E-14 7.143526227752152E-12 6.353789706089435E-13 6.56516382448062E-12 3.970575337619385E-13
tp -3.676177829518178E-12 7.143526227752152E-12 4.425132898492906E-9 9.427544644346723E-11 2.752749588095072E-9 -2.376933018622639E-10
node -3.043894272498405E-13 6.353789706089435E-13 9.427544644346723E-11 6.857814128613557E-11 2.594513366865341E-11 2.606009318085719E-11
peri -3.271427265703004E-12 6.56516382448062E-12 2.752749588095072E-9 2.594513366865341E-11 1.88248277719571E-9 -1.296812469869352E-10
i -1.671340778704338E-13 3.970575337619385E-13 -2.376933018622639E-10 2.606009318085719E-11 -1.296812469869352E-10 7.87714696794975E-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 17.6   n/a MPO456097  
diameter diameter 2.003 km 0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 221. h n/a LCDB (Rev. 2019-August); 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:
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46, 153-157.]
geometric albedo albedo 0.040   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

442742 (2012 WP3)          Discovered 2010-Mar-22 by WISE at WISE
Reference: Last Updated: 2015-09-02

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Alternate Designations
 2012 WP3 = 2010 FV46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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