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74897 (1999 TN122)
Classification: Main-belt Asteroid          SPK-ID: 2074897
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1158717885202891 6.9473e-08  
a 2.298671362575305 1.0703e-08 au
q 2.032320200573335 1.5844e-07 au
i 3.417788622259841 4.8904e-06 deg
node 119.5641703005452 0.00011794 deg
peri 40.39470294775339 0.00012013 deg
M 197.4548685978298 2.3724e-05 deg
tp 2459575.258258196446
(2021-Dec-26.75825820)
8.5241e-05 TDB
period 1272.957062237533
3.49
8.8904e-06
2.434e-08
d
yr
n .2828060825297689 1.9751e-09 deg/d
Q 2.565022524577276 1.1943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      964  
   data-arc span      6684 days (18.30 yr)  
   first obs. used      1999-10-02  
   last obs. used      2018-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51398  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-05 21:42:19  

Additional Information
 Earth MOID = 1.04257 au 
 Jupiter MOID = 2.41328 au 
 T_jup = 3.582 
[ 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 15.2   n/a MPO432302  
diameter diameter 3.562 km 0.720 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.091   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

74897 (1999 TN122)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TN122 = 2001 BY49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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