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19976 (1989 TD)
Classification: Main-belt Asteroid          SPK-ID: 2019976
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2560502538786711 4.0917e-08  
a 2.321257562993471 1.0771e-08 au
q 1.726898974671208 9.2259e-08 au
i 3.01047586924991 5.1787e-06 deg
node 306.3420705465829 7.4867e-05 deg
peri 51.39172654081008 7.5591e-05 deg
M 246.7316656924259 1.3812e-05 deg
tp 2459406.933444308113
(2021-Jul-11.43344431)
5.1629e-05 TDB
period 1291.764735884678
3.54
8.9907e-06
2.462e-08
d
yr
n .2786885181173881 1.9397e-09 deg/d
Q 2.915616151315735 1.3529e-08 au
  Orbit Determination Parameters
   # obs. used (total)      885  
   data-arc span      13622 days (37.30 yr)  
   first obs. used      1982-10-14  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52142  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:59:12  

Additional Information
 Earth MOID = .724833 au 
 Jupiter MOID = 2.54393 au 
 T_jup = 3.531 
[ 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 15.3   n/a MPO319334  
diameter diameter 2.038 km 0.381 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.466   0.223 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19976 (1989 TD)          Discovered 1989-Oct-04 by Baur, J. M. at Chions
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 TD = 1982 TN1 = 1982 VF6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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