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JPL Small-Body Database Browser
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452257 (2015 TW121)
Classification: Main-belt Asteroid          SPK-ID: 2452257
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04436473109041961 7.1938e-08  
a 2.723242871078929 3.9778e-08 au
q 2.60242693340961 2.1461e-07 au
i 11.58945652620433 7.3817e-06 deg
node 164.7465010475951 3.0403e-05 deg
peri 243.4415915354922 8.4528e-05 deg
M 269.785433757488 7.7781e-05 deg
tp 2459011.841146835252
(2020-Jun-11.34114684)
0.0003564 TDB
period 1641.451253699089
4.49
3.5965e-05
9.847e-08
d
yr
n .2193181181522892 4.8054e-09 deg/d
Q 2.844058808748248 4.1543e-08 au
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      6614 days (18.11 yr)  
   first obs. used      2001-08-24  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61929  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:48:17  

Additional Information
 Earth MOID = 1.6283 au 
 Jupiter MOID = 2.31792 au 
 T_jup = 3.327 
[ 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 16.8   n/a MPO450473  

452257 (2015 TW121)          Discovered 2008-Feb-11 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-11-30

Alternate Designations
 2015 TW121 = 2010 RZ168 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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