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120940 (1998 TN12)
Classification: Main-belt Asteroid          SPK-ID: 2120940
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1114780519333483 4.4622e-08  
a 3.055017062628307 2.0568e-08 au
q 2.714449711863364 1.3532e-07 au
i .4642335035619122 4.4478e-06 deg
node 265.842915856402 0.00065954 deg
peri 60.00158986386763 0.00065996 deg
M 78.56180467568466 2.2291e-05 deg
tp 2458574.874305786091
(2019-Apr-01.37430579)
0.00012078 TDB
period 1950.378438346026
5.34
1.9696e-05
5.392e-08
d
yr
n .1845795630848389 1.864e-09 deg/d
Q 3.395584413393251 2.286e-08 au
  Orbit Determination Parameters
   # obs. used (total)      499  
   data-arc span      7689 days (21.05 yr)  
   first obs. used      1998-10-13  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55302  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 11:16:43  

Additional Information
 Earth MOID = 1.70262 au 
 Jupiter MOID = 1.9077 au 
 T_jup = 3.226 
[ 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 15.6   n/a MPO453680  
diameter diameter 4.254 km 0.749 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120940 (1998 TN12)          Discovered 1998-Oct-13 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 TN12 = 2000 AD253 = 2001 FE182 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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