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78550 (2002 RS128)
Classification: Main-belt Asteroid          SPK-ID: 2078550
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 .07437019165708578 5.3367e-08  
a 3.103665363352682 2.3074e-08 au
q 2.872845175440684 1.6733e-07 au
i 17.55021044879673 5.9637e-06 deg
node 202.2584656683382 1.3674e-05 deg
peri 183.6354929410794 3.2399e-05 deg
M 45.02472568494858 2.7927e-05 deg
tp 2458750.719036806445
(2019-Sep-24.21903681)
0.00015542 TDB
period 1997.150351984036
5.47
2.2271e-05
6.097e-08
d
yr
n .1802568342650637 2.0101e-09 deg/d
Q 3.33448555126468 2.479e-08 au
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      11085 days (30.35 yr)  
   first obs. used      1990-06-16  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46156  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:26  

Additional Information
 Earth MOID = 1.87675 au 
 Jupiter MOID = 2.0862 au 
 T_jup = 3.145 
[ 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 14.7   n/a MPO502630  
diameter diameter 4.596 km 1.314 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.325 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 0.145   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78550 (2002 RS128)          Discovered 2002-Sep-10 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 RS128 = 2001 MD26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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