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160559 (1998 RS55)
Classification: Main-belt Asteroid          SPK-ID: 2160559
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1434895683477041 5.7319e-08  
a 2.761836358042249 2.2234e-08 au
q 2.365541651179772 1.7023e-07 au
i 5.991192438610388 5.3162e-06 deg
node 327.1877942970601 5.0354e-05 deg
peri 4.787975819598023 5.3372e-05 deg
M 282.2672275764861 1.8601e-05 deg
tp 2459362.490353598401
(2021-May-27.99035360)
8.8147e-05 TDB
period 1676.468280140798
4.59
2.0245e-05
5.543e-08
d
yr
n .2147371377463613 2.5931e-09 deg/d
Q 3.158131064904727 2.5424e-08 au
  Orbit Determination Parameters
   # obs. used (total)      558  
   data-arc span      7929 days (21.71 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56553  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 03:08:18  

Additional Information
 Earth MOID = 1.355 au 
 Jupiter MOID = 2.19231 au 
 T_jup = 3.318 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456934.5 (2014-Oct-04.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1420486262070198 5.7328e-08  
q 2.3704432411248 1.7011e-07 au
tp 2457687.586950084933
(2016-Oct-26.08695009)
8.3766e-05 TDB
node 327.2104217202016 5.0353e-05 deg
peri 5.03893771137265 5.3438e-05 deg
i 5.990092333389356 5.3149e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      558  
   data-arc span      7929 days (21.71 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56553  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 03:08:18  

Additional Information
 Jupiter MOID = 2.19231 au 
 T_jup = 3.318 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.286489883713709E-15 -9.71094969766607E-15 4.868343346353952E-13 1.350365197707253E-14 2.126637334293107E-13 -4.454279445110166E-16
q -9.71094969766607E-15 2.893634378339793E-14 -1.127490957467697E-12 -3.963145608072328E-14 -5.898442000633113E-13 2.03671506599227E-15
tp 4.868343346353952E-13 -1.127490957467697E-12 7.016800174709543E-9 -4.267739215022829E-12 1.519292014758096E-9 1.381640853829385E-12
node 1.350365197707253E-14 -3.963145608072328E-14 -4.267739215022829E-12 2.535426749708952E-9 -2.521301671607916E-9 7.102333945211167E-11
peri 2.126637334293107E-13 -5.898442000633113E-13 1.519292014758096E-9 -2.521301671607916E-9 2.855584172619479E-9 -7.0444681916704E-11
i -4.454279445110166E-16 2.03671506599227E-15 1.381640853829385E-12 7.102333945211167E-11 -7.0444681916704E-11 2.82481973904059E-11

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 15.2   n/a MPO433026  
diameter diameter 5.744 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.80 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
geometric albedo albedo 0.049   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160559 (1998 RS55)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ show close-approach data ]
Alternate Designations
 1998 RS55 = 2003 UJ130 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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