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13228 (1997 SJ25)
Classification: Main-belt Asteroid          SPK-ID: 2013228
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1632537071797355 3.2999e-08  
a 3.160853252327063 1.5977e-08 au
q 2.644832241033546 1.0329e-07 au
i 2.996685136898911 3.2459e-06 deg
node 79.77099038805808 8.4974e-05 deg
peri 211.3106426477213 8.586e-05 deg
M 73.7871147461009 1.2186e-05 deg
tp 2458579.789883732289
(2019-Apr-06.28988373)
6.9669e-05 TDB
period 2052.602847767258
5.62
1.5563e-05
4.261e-08
d
yr
n .1753870703198109 1.3298e-09 deg/d
Q 3.67687426362058 1.8585e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2188  
   data-arc span      10336 days (28.30 yr)  
   first obs. used      1991-09-15  
   last obs. used      2020-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50941  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:34:59  

Additional Information
 Earth MOID = 1.62918 au 
 Jupiter MOID = 1.51017 au 
 T_jup = 3.182 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456897.5 (2014-Aug-28.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1654643705293179 3.2924e-08  
q 2.63714976931212 1.0363e-07 au
tp 2456532.462890373761
(2013-Aug-27.96289037)
7.2291e-05 TDB
node 79.81126909855354 8.5111e-05 deg
peri 212.1765451037664 8.5978e-05 deg
i 2.9961426878299 3.2427e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2188  
   data-arc span      10336 days (28.30 yr)  
   first obs. used      1991-09-15  
   last obs. used      2020-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50941  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:34:59  

Additional Information
 Jupiter MOID = 1.51017 au 
 T_jup = 3.182 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.083973755576191E-15 -3.383221795055209E-15 6.864837399537658E-13 4.43038806223153E-15 1.2497909814311E-13 -1.688114440746182E-16
q -3.383221795055209E-15 1.074002276059147E-14 -2.49800135761891E-12 -1.46073383503538E-14 -4.446004962837964E-13 5.865999589610273E-16
tp 6.864837399537658E-13 -2.49800135761891E-12 5.225950040394853E-9 1.433467268004952E-11 9.170699640908929E-10 4.231564774086337E-15
node 4.43038806223153E-15 -1.46073383503538E-14 1.433467268004952E-11 7.243806815450041E-9 -7.231158973322112E-9 1.847414511749159E-11
peri 1.2497909814311E-13 -4.446004962837964E-13 9.170699640908929E-10 -7.231158973322112E-9 7.392148171561261E-9 -1.844864225946509E-11
i -1.688114440746182E-16 5.865999589610273E-16 4.231564774086337E-15 1.847414511749159E-11 -1.844864225946509E-11 1.05149536899018E-11

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 12.9   n/a MPO502269  
diameter diameter 12.507 km 0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 25.385 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.113   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13228 (1997 SJ25)          Discovered 1997-Sep-29 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20000124/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 SJ25 = 1986 UA3 = 1991 RF37 = 1995 FH18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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