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19978 (1989 TN6)
Classification: Main-belt Asteroid          SPK-ID: 2019978
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1266061032958125 3.2779e-08  
a 2.293249598852802 8.3306e-09 au
q 2.002910203257364 7.6897e-08 au
i 6.067949689985412 3.9742e-06 deg
node 153.4062121111181 3.7019e-05 deg
peri 113.7351021509851 4.0846e-05 deg
M 33.14339005370636 1.7051e-05 deg
tp 2458883.719630957439
(2020-Feb-04.21963096)
5.9932e-05 TDB
period 1268.456026592263
3.47
6.9118e-06
1.892e-08
d
yr
n .2838096019513963 1.5465e-09 deg/d
Q 2.583588994448241 9.3853e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1339  
   data-arc span      10816 days (29.61 yr)  
   first obs. used      1989-09-28  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53832  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:47:45  

Additional Information
 Earth MOID = .99623 au 
 Jupiter MOID = 2.50436 au 
 T_jup = 3.579 
[ 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 15.1   n/a MPO384926  
diameter diameter 2.354 km 0.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.350   0.135 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

19978 (1989 TN6)          Discovered 1989-Oct-07 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 TN6 = 1999 RV46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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