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JPL Small-Body Database Browser
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91533 (1999 RY199)
Classification: Main-belt Asteroid          SPK-ID: 2091533
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07729298794504691 6.1017e-08  
a 2.618674004410417 2.166e-08 au
q 2.416268866155515 1.6032e-07 au
i 14.24456284147482 6.3643e-06 deg
node 284.4332638174261 2.773e-05 deg
peri 275.9287319994897 5.2571e-05 deg
M 112.484301781737 4.7137e-05 deg
tp 2458516.873601612091
(2019-Feb-02.37360161)
0.00020182 TDB
period 1547.820457271265
4.24
1.9204e-05
5.258e-08
d
yr
n .2325851156113179 2.8857e-09 deg/d
Q 2.821079142665319 2.3335e-08 au
  Orbit Determination Parameters
   # obs. used (total)      961  
   data-arc span      7182 days (19.66 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49111  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:04:08  

Additional Information
 Earth MOID = 1.46092 au 
 Jupiter MOID = 2.35572 au 
 T_jup = 3.358 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456609.5 (2013-Nov-13.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07642207769102757 6.1305e-08  
q 2.419972603163269 1.6066e-07 au
tp 2456965.373230039158
(2014-Nov-03.87323004)
0.00020132 TDB
node 284.4723354178678 2.7736e-05 deg
peri 275.1115237533017 5.2716e-05 deg
i 14.24002733936668 6.361e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      961  
   data-arc span      7182 days (19.66 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49111  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:04:08  

Additional Information
 Jupiter MOID = 2.35572 au 
 T_jup = 3.358 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.758242863981813E-15 -9.774678949328093E-15 -2.062365213564573E-12 -2.149558632622943E-15 -4.220386446971116E-13 7.957963799201497E-15
q -9.774678949328093E-15 2.581138565443447E-14 5.604169132941331E-12 3.016960400202045E-15 1.134212701076794E-12 -2.075234588575856E-14
tp -2.062365213564573E-12 5.604169132941331E-12 4.05282564403292E-8 -1.733121268552507E-11 9.079859915787463E-9 -6.686093710714084E-12
node -2.149558632622943E-15 3.016960400202045E-15 -1.733121268552507E-11 7.692787975243046E-10 -7.486441420568474E-10 2.045259586622596E-11
peri -4.220386446971116E-13 1.134212701076794E-12 9.079859915787463E-9 -7.486441420568474E-10 2.778953354421806E-9 -2.130278330372059E-11
i 7.957963799201497E-15 -2.075234588575856E-14 -6.686093710714084E-12 2.045259586622596E-11 -2.130278330372059E-11 4.046211660960868E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9   n/a MPO439643  
diameter diameter 4.987 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.85 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:
[Kim, M.-J.; Choi, Y.-J.; Moon, H.-K.; Byun, Y.-I.; et al. (2014) Astron. J. 147, A56.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.283   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91533 (1999 RY199)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 RY199 = 2000 WM117 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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