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JPL Small-Body Database Browser
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233971 (1991 TD2)
Classification: Main-belt Asteroid          SPK-ID: 2233971
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2171855176645849 4.1537e-08  
a 2.24523752476059 1.1734e-08 au
q 1.75760445066551 9.4077e-08 au
i 6.567453353360955 6.2088e-06 deg
node 178.0097247164064 3.7834e-05 deg
peri 128.3238681768661 4.111e-05 deg
M 120.6348300895037 1.6573e-05 deg
tp 2458188.723004064272
(2018-Mar-11.22300406)		 5.4514e-05 TDB
period 1228.830168093884
3.36		 9.6333e-06
2.637e-08		 d
yr
n .2929615575425029 2.2967e-09 deg/d
Q 2.732870598855671 1.4283e-08 au
   Orbit Determination Parameters
   # obs. used (total)      233  
   data-arc span      9872 days (27.03 yr)  
   first obs. used      1991-10-08  
   last obs. used      2018-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63962  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 04:04:34  

Additional Information
 Earth MOID = .751458 au 
 Jupiter MOID = 2.55016 au 
 T_jup = 3.592 
[ 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 17.4   n/a MPO454692  

233971 (1991 TD2)          Discovered 1991-Oct-08 by Spacewatch at Kitt Peak
Reference: 20100330/Numbers.arcLast Updated: 2010-04-05

Alternate Designations
 1991 TD2 = 2001 SJ219 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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