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JPL Small-Body Database Browser
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59940 (1999 RT197)
Classification: Main-belt Asteroid          SPK-ID: 2059940
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1502789838703527 6.2054e-08  
a 2.302529697779107 1.3067e-08 au
q 1.956507874465552 1.4577e-07 au
i 6.480176984092688 4.7864e-06 deg
node 252.9402475310392 5.6656e-05 deg
peri 100.1339473115071 5.892e-05 deg
M 219.9653445557472 2.0293e-05 deg
tp 2459096.908619468992
(2020-Sep-04.40861947)
7.4648e-05 TDB
period 1276.163407135882
3.49
1.0863e-05
2.974e-08
d
yr
n .2820955357182313 2.4013e-09 deg/d
Q 2.648551521092661 1.503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      477  
   data-arc span      7690 days (21.05 yr)  
   first obs. used      1998-04-19  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59776  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:16:13  

Additional Information
 Earth MOID = .963221 au 
 Jupiter MOID = 2.80377 au 
 T_jup = 3.567 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO267896  
rotation period rot_per 11.783 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

59940 (1999 RT197)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RT197 = 2002 LW18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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