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91571 (1999 RZ252)
Classification: Main-belt Asteroid          SPK-ID: 2091571
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 .01221346133781886 5.0812e-08  
a 3.065361560363555 2.5252e-08 au
q 3.027922885459619 1.5748e-07 au
i 10.19861729824094 5.4196e-06 deg
node 222.9102946191211 2.212e-05 deg
peri 203.4362420574626 0.00020565 deg
M 248.3142507964379 0.00020825 deg
tp 2459608.657754244155
(2022-Jan-29.15775424)
0.0011381 TDB
period 1960.292992518272
5.37
2.4223e-05
6.632e-08
d
yr
n .1836460168831851 2.2692e-09 deg/d
Q 3.102800235267492 2.556e-08 au
  Orbit Determination Parameters
   # obs. used (total)      819  
   data-arc span      7290 days (19.96 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54937  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:58:09  

Additional Information
 Earth MOID = 2.03998 au 
 Jupiter MOID = 1.94442 au 
 T_jup = 3.208 
[ 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 14.2   n/a MPO264001  
diameter diameter 3.640 km 0.765 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.367   0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91571 (1999 RZ252)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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