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13538 (1991 ST)
Classification: Main-belt Asteroid          SPK-ID: 2013538
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2204218839069475 1.5365e-08  
a 2.200901988644895 5.156e-09 au
q 1.71577502601324 3.5423e-08 au
i 6.849000347504771 4.9218e-07 deg
node 79.51239023825914 5.0888e-06 deg
peri 229.2925271516808 5.4861e-06 deg
M 10.15066384399176 3.8508e-06 deg
tp 2459166.872744321233
(2020-Nov-13.37274432)
1.2699e-05 TDB
period 1192.612840934691
3.27
4.1909e-06
1.147e-08
d
yr
n .3018582289604191 1.0607e-09 deg/d
Q 2.686028951276549 6.2925e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2861  
   data-arc span      24835 days (67.99 yr)  
   first obs. used      1952-11-12  
   last obs. used      2020-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45764  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:00:13  

Additional Information
 Earth MOID = .708359 au 
 Jupiter MOID = 2.58267 au 
 T_jup = 3.624 
[ 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 13.67   n/a E2021B10  
diameter diameter 4.762 km 0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.3206 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Ditteon, R.; Trent, L. (2018) Minor Planet Bull. 45, 328-329.]
[Radford, D. (2018) Minor Planet Bull. 45, 2.]
geometric albedo albedo 0.340   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

13538 (1991 ST)          Discovered 1991-Sep-30 by McNaught, R. H. at Siding Spring
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 ST = 1952 VD = 1978 SB1 = 1978 TL9 = 1994 LF8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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