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66539 (1999 RX117)
Classification: Main-belt Asteroid          SPK-ID: 2066539
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .243179739200747 2.8551e-08  
a 2.570697760111054 1.1724e-08 au
q 1.945556149243303 7.0351e-08 au
i 7.398040357527544 4.4719e-06 deg
node 263.5085240729754 3.1971e-05 deg
peri 61.59902059833306 3.4159e-05 deg
M 13.72691685495226 1.2316e-05 deg
tp 2458943.095563523730
(2020-Apr-03.59556352)
5.1386e-05 TDB
period 1505.479879409451
4.12
1.0299e-05
2.82e-08
d
yr
n .2391264107370308 1.6359e-09 deg/d
Q 3.195839370978804 1.4575e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1040  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-03-31  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47907  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:49:15  

Additional Information
 Earth MOID = .946319 au 
 Jupiter MOID = 2.18844 au 
 T_jup = 3.376 
[ 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 14.9   n/a MPO436246  
rotation period rot_per 18.5202 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.]

66539 (1999 RX117)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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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
1942-Jul-02 07:49 00:01 Amphi 0.0400666336242103 0.0400521710926806 0.0400810973846206 6.21662744266159 6.21662741958162 2430542.825601728 1.2319811479073 801.910569621273 54.3523813950141 26.0104761566711 48813.0398530787 T 20 CATAB v2.0f-lin.ifort 2020-Dec-17 21:49:18 2020-Dec-17 21:49
2174-Apr-25 00:56 00:08 Inter 0.0315420823907904 0.0315328643058538 0.0315513306986614 3.38854007658037 3.38853993961344 2515211.539212182 7.78035768079499 1611.42698086172 42.6039043554136 73.4865126357815 106059.249418608 T 20 CATAB v2.0f-lin.ifort 2020-Dec-17 21:49:18 2020-Dec-17 21:49
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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