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21589 Rafes (1998 SR162)
Classification: Main-belt Asteroid          SPK-ID: 2021589
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1587493870739888 1.0546e-08  
a 2.783222976401104 9.5543e-09 au
q 2.341388034807186 2.8723e-08 au
i 8.859038725276331 2.9787e-07 deg
node 226.9159313908141 4.4242e-06 deg
peri 27.28578348717632 9.3351e-06 deg
M 81.81024440604637 7.5879e-06 deg
tp 2459011.087658164319
(2020-Jun-10.58765816)
3.5688e-05 TDB
period 1695.978835758014
4.64
8.7329e-06
2.391e-08
d
yr
n .2122667998030169 1.093e-09 deg/d
Q 3.225057917995021 1.1071e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2114  
   data-arc span      10686 days (29.26 yr)  
   first obs. used      1992-05-07  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5022  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:44:00  

Additional Information
 Earth MOID = 1.33135 au 
 Jupiter MOID = 1.81918 au 
 T_jup = 3.296 
[ 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 13.5   n/a MPO474049  
diameter diameter 5.271 km 0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.77 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.253   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21589 Rafes           Discovered 1998 Sept. 26 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Courtney Anne Rafes (b. 1987) was awarded second place in the 2006 Intel International Science and Engineering Fair for her engineering project. She attends the Northwest High School, Justin, Texas, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060711/MPCPages.arcLast Updated: 2006-07-17

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1929-Oct-16 23:38 00:01 Jupiter 1.8310855659827 1.83108520647165 1.8310859254953 2.98121933046109 2.82179195603721 2425901.484683509 1.20108738704375 93.1799338973365 3.93840177304415 78.8768852306749 14261745.3098311 T 34 CATAB v2.0g-lin.ifort 2021-Aug-24 22:45:41 2021-Aug-24 22:45
1952-Aug-11 02:56 < 00:01 Jupiter 1.85443397542716 1.85443368992751 1.85443426092754 3.12107975786141 2.97113249340666 2434235.622137156 0.865949554211605 75.7334695756255 6.49232096409396 -81.7002640402905 9766061.5719537 T 34 CATAB v2.0g-lin.ifort 2021-Aug-24 22:45:41 2021-Aug-24 22:45
2036-Jul-28 23:29 < 00:01 Jupiter 1.83816407221248 1.8381639775603 1.83816416686465 2.96464730774047 2.80491309316351 2464903.478599384 0.352081673500389 31.1735131976715 3.62409799726898 85.0906225632936 16618956.4415129 T 34 CATAB v2.0g-lin.ifort 2021-Aug-24 22:45:41 2021-Aug-24 22:45
2059-May-22 09:10 < 00:01 Jupiter 1.86154375759697 1.86154338065724 1.86154413453724 3.15973792408507 3.01229516355758 2473235.881790354 0.698213154485708 61.9314296566964 5.57741846639953 -75.8231679381709 10833527.2238597 T 34 CATAB v2.0g-lin.ifort 2021-Aug-24 22:45:41 2021-Aug-24 22:45
2143-May-11 17:07 00:02 Jupiter 1.84015351139255 1.84015311235129 1.84015391043768 2.93759181916866 2.77648084078657 2503905.213247796 1.8671446279239 143.643183375465 3.86267818418057 80.4547107598812 14588570.4396619 T 34 CATAB v2.0g-lin.ifort 2021-Aug-24 22:45:41 2021-Aug-24 22:45
2166-Mar-04 01:01 00:02 Jupiter 1.86975320133336 1.86975233264168 1.86975407003216 3.19998186985686 3.05513632478002 2512237.542629456 2.23309053657314 195.098427785663 6.1050131325028 -78.9003048558809 10253944.1476589 T 34 CATAB v2.0g-lin.ifort 2021-Aug-24 22:45:41 2021-Aug-24 22:45

Alternate Designations
 1998 SR162 = 1992 JK1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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