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JPL Small-Body Database Browser
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12955 (2162 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2012955
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08168368784971695 4.0907e-08  
a 2.627977734431251 1.3538e-08 au
q 2.413314821495963 1.1143e-07 au
i 4.446348955410862 4.2153e-06 deg
node 192.8822364272323 5.7968e-05 deg
peri 85.68037698491953 6.3634e-05 deg
M 332.1282411216038 2.5851e-05 deg
tp 2458720.973859695675
(2019-Aug-25.47385970)		 0.00011172 TDB
period 1556.076517440742
4.26		 1.2024e-05
3.292e-08		 d
yr
n .2313510910068145 1.7877e-09 deg/d
Q 2.84264064736654 1.4644e-08 au
   Orbit Determination Parameters
   # obs. used (total)      906  
   data-arc span      16771 days (45.92 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56942  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:13:42  

Additional Information
 Earth MOID = 1.40156 au 
 Jupiter MOID = 2.24217 au 
 T_jup = 3.392 
[ 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 15.2   n/a MPO449039  
diameter diameter 2.347 km 0.260 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.321   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12955 (2162 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 19991222/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2162 T-2 = 1998 MX13 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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