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101991 (1999 RK67)
Classification: Main-belt Asteroid          SPK-ID: 2101991
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2175539436541994 5.0591e-08  
a 2.413073097286636 1.1536e-08 au
q 1.888099528646075 1.1999e-07 au
i 10.39690593086751 5.355e-06 deg
node 171.1774969093042 1.8238e-05 deg
peri 161.5331293626809 2.0432e-05 deg
M 249.6304285091202 9.8687e-06 deg
tp 2459620.259949821787
(2022-Feb-09.75994982)
3.9497e-05 TDB
period 1369.159813656885
3.75
9.8179e-06
2.688e-08
d
yr
n .2629349739958237 1.8854e-09 deg/d
Q 2.938046665927197 1.4045e-08 au
  Orbit Determination Parameters
   # obs. used (total)      436  
   data-arc span      8037 days (22.00 yr)  
   first obs. used      1998-03-21  
   last obs. used      2020-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5147  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:47  

Additional Information
 Earth MOID = .879658 au 
 Jupiter MOID = 2.46939 au 
 T_jup = 3.464 
[ 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 16.41   n/a E2021B55  
rotation period rot_per 15.7484 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

101991 (1999 RK67)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 RK67 = 2002 GY117 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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