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16960 (1998 QS52)
Classification: Apollo [NEO, PHA]          SPK-ID: 2016960
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 248 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8590161107836186 2.7244e-08  
a 2.200923128153573 9.735e-09 au
q .310294702473375 5.9936e-08 au
i 17.52244232113497 4.8636e-06 deg
node 260.2119843788694 2.7501e-05 deg
peri 243.1947147977419 2.6028e-05 deg
M 305.0497972643564 9.9636e-06 deg
tp 2459578.542393265330
(2021-Dec-30.04239327)
3.4173e-05 TDB
period 1192.630023419534
3.27
7.9128e-06
2.166e-08
d
yr
n .3018538800220713 2.0027e-09 deg/d
Q 4.091551553833773 1.8098e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1376  
   data-arc span      13930 days (38.14 yr)  
   first obs. used      1983-06-14  
   last obs. used      2021-08-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46925  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-04 06:07:36  

Additional Information
 Earth MOID = .0175216 au 
 Jupiter MOID = 1.5997 au 
 T_jup = 2.999 
[ 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 14.32   n/a E2021B10  
rotation period rot_per 5.789 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:
[Warner, B.D. (2009) Minor Planet Bull. 36, 7-13.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.J.; Pravec, P.; Koehn, B.W. (2019) Minor Plantet Bull. 46, 238-265.]
SMASSII spectral type spec_B Sq   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

16960 (1998 QS52)          Discovered 1998-Aug-25 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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