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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 115 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3841606749395364 1.0978e-07  
a 2.099732421683765 1.8214e-08 au
q 1.293097797377303 2.2943e-07 au
i 22.56782103100683 8.8709e-06 deg
node 227.1813599177262 8.2823e-06 deg
peri 141.6586760385121 4.342e-05 deg
M 265.3641244461294 1.5364e-05 deg
tp 2459492.644464537151
(2021-Oct-05.14446454)
4.5037e-05 TDB
period 1111.333377726358
3.04
1.446e-05
3.959e-08
d
yr
n .3239352000175794 4.2149e-09 deg/d
Q 2.906367045990228 2.5211e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .33732  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:45:14  

Additional Information
 Earth MOID = .347788 au 
 Jupiter MOID = 2.70007 au 
 T_jup = 3.561 
[ show covariance matrix ]

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. 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:
[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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