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249649 (1999 TC256)
Classification: Main-belt Asteroid          SPK-ID: 2249649
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2314047155077453 4.9063e-08  
a 2.337160485391488 1.0238e-08 au
q 1.796330528173527 1.1259e-07 au
i 4.722528763046513 5.2487e-06 deg
node 222.1049678262478 5.7209e-05 deg
peri 173.7592953065362 5.8429e-05 deg
M 259.5586666811334 9.6081e-06 deg
tp 2459364.617202857039
(2021-May-30.11720286)
3.5296e-05 TDB
period 1305.062255718899
3.57
8.575e-06
2.348e-08
d
yr
n .2758489094466167 1.8125e-09 deg/d
Q 2.877990442609449 1.2607e-08 au
  Orbit Determination Parameters
   # obs. used (total)      354  
   data-arc span      7200 days (19.71 yr)  
   first obs. used      1999-08-08  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57507  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:25:56  

Additional Information
 Earth MOID = .80345 au 
 Jupiter MOID = 2.55162 au 
 T_jup = 3.526 
[ 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 16.9   n/a MPO437159  
diameter diameter 3.025 km 0.686 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.040   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

249649 (1999 TC256)          Discovered 1999-Oct-09 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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