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21591 (1998 TA6)
Classification: Main-belt Asteroid          SPK-ID: 2021591
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1150433805847833 1.7116e-08  
a 2.662941396942092 9.2095e-09 au
q 2.356587616338709 4.8438e-08 au
i 12.66912260318738 1.1917e-06 deg
node 183.7455292075423 1.4054e-06 deg
peri 308.34124470 9.3623e-06 deg
M 314.9175755619863 1.0395e-05 deg
tp 2459399.267604235574
(2021-Jul-03.76760424)
4.6008e-05 TDB
period 1587.233570882896
4.35
8.2339e-06
2.254e-08
d
yr
n .2268097188744253 1.1766e-09 deg/d
Q 2.969295177545475 1.0269e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2293  
   data-arc span      25237 days (69.10 yr)  
   first obs. used      1952-02-01  
   last obs. used      2021-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46827  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 03:01:39  

Additional Information
 Earth MOID = 1.39084 au 
 Jupiter MOID = 2.09868 au 
 T_jup = 3.341 
[ 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 13.5   n/a MPO431749  
diameter diameter 5.304 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.228   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21591 (1998 TA6)          Discovered 1998-Oct-15 by Korlevic, K. at Visnjan
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 TA6 = 1997 MQ9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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