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18444 (1994 PL10)
Classification: Main-belt Asteroid          SPK-ID: 2018444
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .192066200502641 3.8372e-08  
a 3.129301456165478 2.1377e-08 au
q 2.528268415252393 1.2108e-07 au
i 2.825063577285177 4.4221e-06 deg
node 322.8125734030198 8.6581e-05 deg
peri 8.415027478457494 8.7333e-05 deg
M 228.9747086325774 1.4421e-05 deg
tp 2459736.405694525705
(2022-Jun-05.90569453)
8.6025e-05 TDB
period 2021.945895058881
5.54
2.0719e-05
5.673e-08
d
yr
n .1780463072131396 1.8245e-09 deg/d
Q 3.730334497078563 2.5483e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1157  
   data-arc span      10200 days (27.93 yr)  
   first obs. used      1992-03-01  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52522  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:25:51  

Additional Information
 Earth MOID = 1.51765 au 
 Jupiter MOID = 1.63792 au 
 T_jup = 3.183 
[ 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 14.1   n/a MPO467909  
diameter diameter 8.902 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.176 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.061   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18444 (1994 PL10)          Discovered 1994-Aug-10 by Elst, E. W. at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 PL10 = 2000 SS272 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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