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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1151203732259534 1.7107e-08  
a 2.663301640821684 9.2244e-09 au
q 2.356701361916998 4.8426e-08 au
i 12.66931379324837 1.191e-06 deg
node 183.7396470973023 1.4052e-06 deg
peri 308.2839806536134 9.3349e-06 deg
M 359.422362369694 1.0388e-05 deg
tp 2459399.047310810776
(2021-Jul-03.54731081)		 4.5812e-05 TDB
period 1587.555664255466
4.35		 8.2478e-06
2.258e-08		 d
yr
n .2267637022786431 1.1781e-09 deg/d
Q 2.969901919726371 1.0286e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2330  
   data-arc span      25271 days (69.19 yr)  
   first obs. used      1952-02-01  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46757  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:35:17  

Additional Information
 Earth MOID = 1.39179 au 
 Jupiter MOID = 2.09775 au 
 T_jup = 3.340 
[ 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 13.55   n/a MPCxxxxx  
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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