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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01221345659079426 4.6304e-08  
a 3.065361562940029 2.268e-08 au
q 3.027922902555971 1.4823e-07 au
i 10.19862318311352 4.5214e-06 deg
node 222.9103038262382 2.1908e-05 deg
peri 203.436249394244 0.0002033 deg
M 248.314234708901 0.00020563 deg
tp 2459608.657842611696
(2022-Jan-29.15784261)
0.0011233 TDB
period 1960.292994989746
5.37
2.1755e-05
5.956e-08
d
yr
n .1836460166516501 2.0381e-09 deg/d
Q 3.102800223324086 2.2957e-08 au
  Orbit Determination Parameters
   # obs. used (total)      877  
   data-arc span      7634 days (20.90 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .544  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:17:56  

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2000-Apr-28 19:30 < 00:01 Jupiter 1.98546629421412 1.98546577690173 1.9854668115265 4.77662450471676 4.68646123412634 2451663.312277975 0.440538653388387 46.6514248874985 22.9846886084799 80.30542472251 3558845.12727391 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 08:18:08 2020-Aug-25 08:18
2059-Jan-28 16:37 00:01 Jupiter 1.9615449650605 1.96154444966739 1.96154548045439 4.58284669657782 4.48763366455842 2473122.192130168 1.44138499475516 114.429171797739 19.2573652535907 -82.4635741759679 3705295.68163083 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 08:18:08 2020-Aug-25 08:18
2117-Oct-25 18:06 00:03 Jupiter 1.98112955484302 1.98112870123358 1.98113040846045 4.27757080211258 4.17642448539747 2494576.254088346 3.37288322677141 232.676369466747 18.4217318537473 -79.9702733207818 3674349.18642588 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 08:18:08 2020-Aug-25 08:18
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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