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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1414584128196192 1.7306e-08  
a 2.321070225700706 6.6159e-09 au
q 1.992735315530209 3.9668e-08 au
i 7.447834283059102 7.1592e-07 deg
node 7.295230995914391 6.4565e-06 deg
peri 306.3486660202425 7.6758e-06 deg
M 118.3065141578591 4.2642e-06 deg
tp 2458972.039769848774
(2020-May-02.53976985)
1.5118e-05 TDB
period 1291.608361062427
3.54
5.5223e-06
1.512e-08
d
yr
n .2787222588926863 1.1917e-09 deg/d
Q 2.649405135871203 7.5517e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2092  
   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      .47527  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:45:15  

Additional Information
 Earth MOID = .989396 au 
 Jupiter MOID = 2.64169 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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