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19712 (1999 TL220)
Classification: Main-belt Asteroid          SPK-ID: 2019712
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09276447787863221 1.4297e-08  
a 3.158977857978221 1.8654e-08 au
q 2.865936926352711 4.218e-08 au
i 5.22033995924409 8.8063e-07 deg
node 295.5071549976414 6.1172e-06 deg
peri 322.9599177762656 1.8122e-05 deg
M 30.82002927740616 1.3296e-05 deg
tp 2459024.930591571284
(2020-Jun-24.43059157)
7.5729e-05 TDB
period 2050.776346298697
5.61
1.8165e-05
4.973e-08
d
yr
n .1755432768910851 1.5549e-09 deg/d
Q 3.452018789603731 2.0384e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1885  
   data-arc span      9006 days (24.66 yr)  
   first obs. used      1996-01-19  
   last obs. used      2020-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47081  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 02:24:41  

Additional Information
 Earth MOID = 1.85116 au 
 Jupiter MOID = 1.63699 au 
 T_jup = 3.192 
[ 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 12.85   n/a E2021B10  
diameter diameter 15.680 km 0.232 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19712 (1999 TL220)          Discovered 1999-Oct-01 by CSS at Catalina
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TL220 = 1999 RH211 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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