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74232 (1998 ST26)
Classification: Main-belt Asteroid          SPK-ID: 2074232
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08387200440661649 4.0997e-08  
a 3.049749247716366 2.0403e-08 au
q 2.793960665372824 1.2519e-07 au
i 10.60661588721301 5.5168e-06 deg
node 297.4022171375443 3.0152e-05 deg
peri 141.3506510994014 5.2002e-05 deg
M 78.29585292810438 4.151e-05 deg
tp 2458777.411827323754
(2019-Oct-20.91182732)
0.00022307 TDB
period 1945.336010367112
5.33
1.9522e-05
5.345e-08
d
yr
n .18505800441748 1.8571e-09 deg/d
Q 3.305537830059909 2.2114e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1216  
   data-arc span      8545 days (23.39 yr)  
   first obs. used      1997-10-30  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49383  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:18:56  

Additional Information
 Earth MOID = 1.81851 au 
 Jupiter MOID = 1.88849 au 
 T_jup = 3.206 
[ 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 14.16   n/a E2021B10  
diameter diameter 5.330 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.14 h n/a LCDB (Rev. 2020-October); 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.188   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74232 (1998 ST26)          Discovered 1998-Sep-24 by Pravec, P. at Ondrejov
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 ST26 = 1998 YU21 = 2002 PA49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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