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47142 (1999 LQ2)
Classification: Inner Main-belt Asteroid          SPK-ID: 2047142
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07284110948170297 4.43e-08  
a 1.893449377082147 6.6496e-09 au
q 1.755528423708044 8.4597e-08 au
i 18.99642605185916 4.8359e-06 deg
node 228.0023963537456 1.4276e-05 deg
peri 146.5287527027967 3.4638e-05 deg
M 265.4539770297151 3.1757e-05 deg
tp 2459250.430776730900
(2021-Feb-04.93077673)
8.4178e-05 TDB
period 951.6537744945923
2.61
5.0131e-06
1.373e-08
d
yr
n .3782888374411063 1.9928e-09 deg/d
Q 2.03137033045625 7.1339e-09 au
  Orbit Determination Parameters
   # obs. used (total)      905  
   data-arc span      8380 days (22.94 yr)  
   first obs. used      1997-10-29  
   last obs. used      2020-10-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4813  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:43:39  

Additional Information
 Earth MOID = .776387 au 
 Jupiter MOID = 3.21746 au 
 T_jup = 3.886 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO468335  
diameter diameter 1.409 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.08479 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.]
geometric albedo albedo 0.354   0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

47142 (1999 LQ2)          Discovered 1999-Jun-08 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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