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16950 (1998 JQ)
Classification: Main-belt Asteroid          SPK-ID: 2016950
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1415244985641903 1.7311e-08  
a 2.320747323765266 6.6281e-09 au
q 1.9923047224752 3.9691e-08 au
i 7.448079271434963 7.1597e-07 deg
node 7.297980544435066 6.4566e-06 deg
peri 306.2894510334785 7.674e-06 deg
M 63.72329889967568 4.2308e-06 deg
tp 2458971.921191627242
(2020-May-02.42119163)
1.5103e-05 TDB
period 1291.338842073218
3.54
5.5321e-06
1.515e-08
d
yr
n .278780431805201 1.1943e-09 deg/d
Q 2.649189925055332 7.5661e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2090  
   data-arc span      24091 days (65.96 yr)  
   first obs. used      1955-03-23  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47161  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:48:08  

Additional Information
 Earth MOID = .987668 au 
 Jupiter MOID = 2.64266 au 
 T_jup = 3.553 
[ 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 14.28   n/a E2021B10  
rotation period rot_per 3.028 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.]

16950 (1998 JQ)          Discovered 1998-May-01 by JPL/GEODSS NEAT at Haleakala
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 JQ = 1994 CK17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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