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118405 (1999 RM104)
Classification: Main-belt Asteroid          SPK-ID: 2118405
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1400812003643285 5.8729e-08  
a 3.118557410236015 2.7575e-08 au
q 2.681706144805082 1.8284e-07 au
i 8.592916930405941 6.5255e-06 deg
node 230.2984643077337 3.2968e-05 deg
peri 135.3271577318663 3.8192e-05 deg
M 260.4010824555526 2.2386e-05 deg
tp 2459557.020491236898
(2021-Dec-08.52049124)
0.00012955 TDB
period 2011.5417093351
5.51
2.668e-05
7.305e-08
d
yr
n .1789672062624022 2.3737e-09 deg/d
Q 3.555408675666948 3.1438e-08 au
  Orbit Determination Parameters
   # obs. used (total)      570  
   data-arc span      7179 days (19.66 yr)  
   first obs. used      1999-09-05  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51321  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:55:41  

Additional Information
 Earth MOID = 1.68932 au 
 Jupiter MOID = 1.96963 au 
 T_jup = 3.184 
[ 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 14.8   n/a MPO296886  
diameter diameter 3.571 km 0.993 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.042 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.183   0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118405 (1999 RM104)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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