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21837 (1999 TL97)
Classification: Main-belt Asteroid          SPK-ID: 2021837
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08513237193069451 2.6007e-08  
a 2.410472537189424 7.4219e-09 au
q 2.205263292624689 6.3431e-08 au
i 6.849290508786431 2.8575e-06 deg
node 128.1748113060594 3.0642e-05 deg
peri 314.886250932687 3.8398e-05 deg
M 234.3307479059632 2.3597e-05 deg
tp 2459873.675611091334
(2022-Oct-21.17561109)
9.0298e-05 TDB
period 1366.947102258051
3.74
6.3133e-06
1.728e-08
d
yr
n .2633605934021282 1.2163e-09 deg/d
Q 2.615681781754159 8.0538e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1821  
   data-arc span      14436 days (39.52 yr)  
   first obs. used      1982-01-30  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5229  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:45:59  

Additional Information
 Earth MOID = 1.22749 au 
 Jupiter MOID = 2.53425 au 
 T_jup = 3.505 
[ 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 14.81   n/a E2021B10  
diameter diameter 2.627 km 0.953 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.09649 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.308   0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21837 (1999 TL97)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TL97 = 1982 BA15 = 1991 PG22 = 1998 MG21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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