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249950 (2001 TQ212)
Classification: Main-belt Asteroid          SPK-ID: 2249950
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .227282487960308 4.873e-08  
a 2.783977131515929 1.9371e-08 au
q 2.151227882640387 1.4156e-07 au
i 6.518282661859184 5.6271e-06 deg
node 284.8252705306097 4.4185e-05 deg
peri 115.9507483024607 4.5883e-05 deg
M 358.5716955809499 1.2334e-05 deg
tp 2459007.231551942030
(2020-Jun-06.73155194)
5.8162e-05 TDB
period 1696.668207987774
4.65
1.7708e-05
4.848e-08
d
yr
n .2121805538084286 2.2145e-09 deg/d
Q 3.416726380391471 2.3773e-08 au
  Orbit Determination Parameters
   # obs. used (total)      313  
   data-arc span      6505 days (17.81 yr)  
   first obs. used      2001-10-13  
   last obs. used      2019-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55359  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:19:21  

Additional Information
 Earth MOID = 1.16934 au 
 Jupiter MOID = 2.04927 au 
 T_jup = 3.284 
[ 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 16.2   n/a MPO454854  
diameter diameter 4.409 km 0.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249950 (2001 TQ212)          Discovered 2001-Oct-13 by LONEOS at Anderson Mesa
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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