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101954 (1999 RY33)
Classification: Main-belt Asteroid          SPK-ID: 2101954
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .343025230893263 5e-08  
a 3.170971101808866 2.7511e-08 au
q 2.083248007455015 1.6334e-07 au
i 24.52463229862194 8.6817e-06 deg
node 189.7244169878331 1.514e-05 deg
peri 100.206522607099 2.01e-05 deg
M 289.1113854841315 1.4988e-05 deg
tp 2459606.626043944781
(2022-Jan-27.12604394)
8.9693e-05 TDB
period 2062.466262299326
5.65
2.6841e-05
7.349e-08
d
yr
n .1745483097496376 2.2715e-09 deg/d
Q 4.258694196162716 3.6948e-08 au
  Orbit Determination Parameters
   # obs. used (total)      442  
   data-arc span      8391 days (22.97 yr)  
   first obs. used      1998-03-25  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53548  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:36  

Additional Information
 Earth MOID = 1.22016 au 
 Jupiter MOID = 1.91887 au 
 T_jup = 2.975 
[ 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 15.23   n/a E2021B55  
diameter diameter 5.175 km 0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.194 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.032   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

101954 (1999 RY33)          Discovered 1999-Sep-10 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 RY33 = 2004 FN64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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