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173247 (1999 RQ46)
Classification: Main-belt Asteroid          SPK-ID: 2173247
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2412317324515053 6.4023e-08  
a 2.342781371101117 1.047e-08 au
q 1.777628162195282 1.5288e-07 au
i 8.970341586242482 6.5622e-06 deg
node 323.6022153042161 2.3256e-05 deg
peri 4.612080732570373 2.4457e-05 deg
M 279.0511383890671 7.1476e-06 deg
tp 2459295.012895003023
(2021-Mar-21.51289500)
2.6655e-05 TDB
period 1309.77310972794
3.59
8.7804e-06
2.404e-08
d
yr
n .2748567651345181 1.8426e-09 deg/d
Q 2.907934580006953 1.2996e-08 au
  Orbit Determination Parameters
   # obs. used (total)      724  
   data-arc span      7594 days (20.79 yr)  
   first obs. used      1999-07-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52335  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:25:27  

Additional Information
 Earth MOID = .76636 au 
 Jupiter MOID = 2.44818 au 
 T_jup = 3.507 
[ 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 15.8   n/a MPO376220  
diameter diameter 1.933 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.150 h n/a LCDB (Rev. 2019-August); 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.]
geometric albedo albedo 0.327   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173247 (1999 RQ46)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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