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JPL Small-Body Database Browser
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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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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08371560891031143 4.699e-08  
a 3.049841117645055 2.4851e-08 au
q 2.794521811401694 1.4921e-07 au
i 10.6058044415123 6.5094e-06 deg
node 297.4067513191995 3.3511e-05 deg
peri 141.642776821208 6.0231e-05 deg
M 327.0187062708982 4.8449e-05 deg
tp 2458778.729437441759
(2019-Oct-22.22943744)
0.00026233 TDB
period 1945.423912295404
5.33
2.3778e-05
6.51e-08
d
yr
n .1850496427666689 2.2618e-09 deg/d
Q 3.305160423888415 2.6932e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1004  
   data-arc span      8038 days (22.01 yr)  
   first obs. used      1997-10-30  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51364  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:45:25  

Additional Information
 Earth MOID = 1.81927 au 
 Jupiter MOID = 1.88889 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-January); 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

[ show close-approach data ]
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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