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15260 (1990 SY8)
Classification: Main-belt Asteroid          SPK-ID: 2015260
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1656172276457724 2.4873e-08  
a 2.31083734609867 5.9309e-09 au
q 1.928122871297494 5.8744e-08 au
i 4.236343888822097 3.6217e-06 deg
node 56.70828466284251 3.6638e-05 deg
peri 240.6996411679921 3.8271e-05 deg
M 319.3048171673136 1.1081e-05 deg
tp 2459541.541738485633
(2021-Nov-23.04173849)
3.9572e-05 TDB
period 1283.076330422297
3.51
4.9396e-06
1.352e-08
d
yr
n .280575669166552 1.0802e-09 deg/d
Q 2.693551820899847 6.9131e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2701  
   data-arc span      11243 days (30.78 yr)  
   first obs. used      1990-09-14  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43869  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 03:46:17  

Additional Information
 Earth MOID = .916171 au 
 Jupiter MOID = 2.50406 au 
 T_jup = 3.563 
[ 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 14.88   n/a MPO614063  
diameter diameter 2.377 km 0.398 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 29.1365 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.452   0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15260 (1990 SY8)          Discovered 1990-Sep-22 by Elst, E. W. at La Silla
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 SY8 = 1993 JN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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