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11381 (1998 SZ115)
Classification: Main-belt Asteroid          SPK-ID: 2011381
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1123555751106288 3.0906e-08  
a 3.197026820849965 1.6973e-08 au
q 2.837823033749262 9.6177e-08 au
i 4.666393763223645 3.5716e-06 deg
node 225.2119323929037 4.3438e-05 deg
peri 15.08908281168383 4.6842e-05 deg
M 118.0161972694339 1.6691e-05 deg
tp 2458712.025989945830
(2019-Aug-16.52598995)
9.7163e-05 TDB
period 2087.939192422372
5.72
1.6627e-05
4.552e-08
d
yr
n .1724188143536582 1.3731e-09 deg/d
Q 3.556230607950668 1.888e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1860  
   data-arc span      10487 days (28.71 yr)  
   first obs. used      1992-10-02  
   last obs. used      2021-06-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45905  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 13:51:37  

Additional Information
 Earth MOID = 1.82612 au 
 Jupiter MOID = 1.44917 au 
 T_jup = 3.180 
[ 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 13.27   n/a E2021B10  
rotation period rot_per 3.054 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

11381 (1998 SZ115)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 19990831/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SZ115 = 1996 FH16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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