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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1436589389369361 5.7275e-08  
a 2.763365620391523 2.2276e-08 au
q 2.366383447471269 1.7033e-07 au
i 5.991751543349275 5.3168e-06 deg
node 327.1770512120446 5.0331e-05 deg
peri 4.590011617729724 5.3345e-05 deg
M 325.3975772232969 1.8752e-05 deg
tp 2459361.772366722668
(2021-May-27.27236672)
8.8094e-05 TDB
period 1677.860894158244
4.59
2.0288e-05
5.555e-08
d
yr
n .2145589072690119 2.5944e-09 deg/d
Q 3.160347793311777 2.5476e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56553  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:01:51  

Additional Information
 Earth MOID = 1.35387 au 
 Jupiter MOID = 2.18939 au 
 T_jup = 3.317 
[ 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 15.25   n/a E2021B55  
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. 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:
[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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