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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08382658825547089 4.6716e-08  
a 3.050141760287212 2.2763e-08 au
q 2.794458782826799 1.473e-07 au
i 10.60675703618567 6.2754e-06 deg
node 297.4027797212806 3.0471e-05 deg
peri 141.4687921487792 5.5736e-05 deg
M 41.18209970051797 4.4094e-05 deg
tp 2458777.920866016081
(2019-Oct-21.42086602)
0.0002381 TDB
period 1945.711578984963
5.33
2.1781e-05
5.963e-08
d
yr
n .1850222838206085 2.0712e-09 deg/d
Q 3.305824737747626 2.4671e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1114  
   data-arc span      8230 days (22.53 yr)  
   first obs. used      1997-10-30  
   last obs. used      2020-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50334  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:29  

Additional Information
 Earth MOID = 1.8193 au 
 Jupiter MOID = 1.88789 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 14.2   n/a MPO459335  
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. 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:
[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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