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19648 (1999 RK104)
Classification: Main-belt Asteroid          SPK-ID: 2019648
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1746485537558226 4.7585e-08  
a 2.676992128787422 1.5415e-08 au
q 2.209459325078978 1.256e-07 au
i 12.11222253295077 4.7287e-06 deg
node 281.035912772679 2.2525e-05 deg
peri 32.3123448343979 2.6915e-05 deg
M 283.922098353359 1.8084e-05 deg
tp 2459338.584369723635
(2021-May-04.08436972)
8.1793e-05 TDB
period 1599.8124352301
4.38
1.3818e-05
3.783e-08
d
yr
n .2250263793881696 1.9436e-09 deg/d
Q 3.144524932495866 1.8107e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1807  
   data-arc span      13621 days (37.29 yr)  
   first obs. used      1982-10-16  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43386  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:52:52  

Additional Information
 Earth MOID = 1.2045 au 
 Jupiter MOID = 2.13539 au 
 T_jup = 3.325 
[ 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 12.7   n/a MPO319330  
diameter diameter 7.335 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.320 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.328   0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19648 (1999 RK104)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RK104 = 1982 UO11 = 1990 HM2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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