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19659 (1999 RB128)
Classification: Main-belt Asteroid          SPK-ID: 2019659
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0875226395537452 3.9845e-08  
a 2.965109828406563 1.719e-08 au
q 2.705595589657668 1.1442e-07 au
i 11.31472614897384 4.7693e-06 deg
node 152.1908229442768 2.6534e-05 deg
peri 159.1947307727063 4.7244e-05 deg
M 76.37174821223675 4.0551e-05 deg
tp 2458804.869436383300
(2019-Nov-17.36943638)
0.00020974 TDB
period 1864.917410378089
5.11
1.6217e-05
4.44e-08
d
yr
n .1930380391092034 1.6786e-09 deg/d
Q 3.224624067155458 1.8694e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1163  
   data-arc span      10597 days (29.01 yr)  
   first obs. used      1992-03-02  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54098  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:01:07  

Additional Information
 Earth MOID = 1.69314 au 
 Jupiter MOID = 2.09715 au 
 T_jup = 3.230 
[ 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 14.39   n/a E2021B10  
diameter diameter 4.665 km 0.510 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.980 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.186   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

19659 (1999 RB128)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RB128 = 1994 PB16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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