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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08752263863837093 3.9857e-08  
a 2.965109833177257 1.7197e-08 au
q 2.705595596725003 1.1447e-07 au
i 11.31472624866998 4.7759e-06 deg
node 152.1908232286635 2.654e-05 deg
peri 159.194728120255 4.7252e-05 deg
M 76.37175013401364 4.0553e-05 deg
tp 2458804.869425473048
(2019-Nov-17.36942547)
0.00020975 TDB
period 1864.917414878909
5.11
1.6224e-05
4.442e-08
d
yr
n .1930380386433225 1.6793e-09 deg/d
Q 3.22462406962951 1.8702e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1159  
   data-arc span      10543 days (28.87 yr)  
   first obs. used      1992-03-02  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54143  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:44:04  

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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