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JPL Small-Body Database Browser
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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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1746485576820962 4.3827e-08  
a 2.676992129932856 1.4676e-08 au
q 2.20945931551376 1.1699e-07 au
i 12.1122217290182 4.5571e-06 deg
node 281.0359130989447 2.2452e-05 deg
peri 32.31234444618921 2.6776e-05 deg
M 283.9220977227179 1.7541e-05 deg
tp 2459338.584372743146
(2021-May-04.08437274)
7.9192e-05 TDB
period 1599.812436256894
4.38
1.3156e-05
3.602e-08
d
yr
n .2250263792437428 1.8505e-09 deg/d
Q 3.144524944351952 1.7239e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1894  
   data-arc span      13709 days (37.53 yr)  
   first obs. used      1982-10-16  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42533  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:03:43  

Additional Information
 Earth MOID = 1.2045 au 
 Jupiter MOID = 2.13539 au 
 T_jup = 3.325 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456671.5 (2014-Jan-14.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1726272484265753 4.3525e-08  
q 2.217310982006543 1.1582e-07 au
tp 2456131.448568620473
(2012-Jul-22.94856862)
7.1713e-05 TDB
node 281.1479700240031 2.2366e-05 deg
peri 31.34505857420491 2.6874e-05 deg
i 12.13228604282453 4.5622e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1894  
   data-arc span      13709 days (37.53 yr)  
   first obs. used      1982-10-16  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42533  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:03:43  

Additional Information
 Jupiter MOID = 2.13539 au 
 T_jup = 3.325 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.894409548205622E-15 -5.012465221873964E-15 6.722363481102666E-13 -1.136259689950657E-14 1.17585069062447E-13 1.990251270456058E-15
q -5.012465221873964E-15 1.341372503292186E-14 -1.636117500924533E-12 2.863017794020647E-14 -2.692061444364903E-13 -5.515915806304381E-15
tp 6.722363481102666E-13 -1.636117500924533E-12 5.142783412695241E-9 -3.45746728750901E-11 1.094724643085788E-9 -2.820249847417885E-12
node -1.136259689950657E-14 2.863017794020647E-14 -3.45746728750901E-11 5.002395573423924E-10 -4.956288354196341E-10 5.860712420388856E-12
peri 1.17585069062447E-13 -2.692061444364903E-13 1.094724643085788E-9 -4.956288354196341E-10 7.222385518275372E-10 -6.35350387083845E-12
i 1.990251270456058E-15 -5.515915806304381E-15 -2.820249847417885E-12 5.860712420388856E-12 -6.35350387083845E-12 2.081402423673171E-11

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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