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JPL Small-Body Database Browser
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49256 (1998 TA31)
Classification: Main-belt Asteroid          SPK-ID: 2049256
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1944634839696638 7.1498e-08  
a 2.583700020754822 1.3676e-08 au
q 2.081264713186347 1.9169e-07 au
i 4.616073425712084 5.2364e-06 deg
node 14.04895907671759 5.6146e-05 deg
peri 126.4503092780749 5.7385e-05 deg
M 352.9580851640829 1.1728e-05 deg
tp 2459030.172205465690
(2020-Jun-29.67220547)
4.9525e-05 TDB
period 1516.916096906652
4.15
1.2044e-05
3.297e-08
d
yr
n .2373236072411153 1.8843e-09 deg/d
Q 3.086135328323298 1.6335e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1389  
   data-arc span      7756 days (21.23 yr)  
   first obs. used      1998-10-10  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52511  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 07:38:56  

Additional Information
 Earth MOID = 1.09802 au 
 Jupiter MOID = 1.94317 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 14.2   n/a MPO359070  
diameter diameter 5.514 km 0.212 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 21.864 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.146   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49256 (1998 TA31)          Discovered 1998-Oct-10 by LONEOS at Anderson Mesa
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 TA31 = 2000 GB58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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