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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 237 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .858715320644502 2.7327e-08  
a 2.201692545688144 9.9603e-09 au
q .3110654253569397 6.0126e-08 au
i 17.52926019545789 4.9381e-06 deg
node 260.3319905353151 2.7602e-05 deg
peri 243.0532739292883 2.6124e-05 deg
M 245.9276066240726 9.7414e-06 deg
tp 2459578.604188025675
(2021-Dec-30.10418803)
3.4761e-05 TDB
period 1193.25547278267
3.27
8.0973e-06
2.217e-08
d
yr
n .3016956621707172 2.0473e-09 deg/d
Q 4.092319666019348 1.8513e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1330  
   data-arc span      13671 days (37.43 yr)  
   first obs. used      1983-06-14  
   last obs. used      2020-11-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47424  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:48:53  

Additional Information
 Earth MOID = .0167526 au 
 Jupiter MOID = 1.59846 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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