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JPL Small-Body Database Browser
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91288 (1999 FZ21)
Classification: Main-belt Asteroid          SPK-ID: 2091288
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1824085335143297 4.1043e-08  
a 2.348972528432004 1.053e-08 au
q 1.920499894255275 9.8389e-08 au
i 5.511276507892513 4.7148e-06 deg
node 201.5875373933049 4.0502e-05 deg
peri 298.1560995266193 4.2253e-05 deg
M 337.5343677858164 1.1314e-05 deg
tp 2459082.559993336051
(2020-Aug-21.05999334)
4.1441e-05 TDB
period 1314.968451336409
3.60
8.8424e-06
2.421e-08
d
yr
n .2737708266948383 1.8409e-09 deg/d
Q 2.777445162608733 1.2451e-08 au
  Orbit Determination Parameters
   # obs. used (total)      823  
   data-arc span      7593 days (20.79 yr)  
   first obs. used      1999-02-14  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .544  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:16:27  

Additional Information
 Earth MOID = .940534 au 
 Jupiter MOID = 2.26971 au 
 T_jup = 3.530 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO453352  
diameter diameter 4.375 km 0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91288 (1999 FZ21)          Discovered 1999-Mar-19 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 FZ21 = 2001 UD79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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