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310560 (2001 QL142)
Classification: Apollo [NEO, PHA]          SPK-ID: 2310560
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4990207382278199 1.3895e-07  
a 1.049400661813334 4.6518e-09 au
q .5257279688584809 1.4578e-07 au
i 26.60582360471141 1.0747e-05 deg
node 165.5799341150957 2.5704e-05 deg
peri 72.12514224261771 2.6462e-05 deg
M 240.553272910083 2.2712e-05 deg
tp 2459130.781329271758
(2020-Oct-08.28132927)
2.509e-05 TDB
period 392.6543629992182
1.08
2.6108e-06
7.148e-09
d
yr
n .9168368772225175 6.0962e-09 deg/d
Q 1.573073354768186 6.9731e-09 au
  Orbit Determination Parameters
   # obs. used (total)      213  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      15682 days (42.93 yr)  
   first obs. used      1974-10-14  
   last obs. used      2017-09-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36879  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-21 06:16:09  

Additional Information
 Earth MOID = .0476636 au 
 Jupiter MOID = 3.59718 au 
 T_jup = 5.654 
[ 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 17.8   n/a MPO314899  
diameter diameter 0.654 km 0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
rotation period rot_per 2.97387 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:
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.313   0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

310560 (2001 QL142)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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