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16956 (1998 MQ11)
Classification: Jupiter Trojan          SPK-ID: 2016956
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1130547176859273 3.898e-08  
a 5.226418107666076 9.7763e-08 au
q 4.635546883995269 2.1569e-07 au
i 30.91738525197663 8.2873e-07 deg
node 137.5684314230245 3.2252e-06 deg
peri 202.3683195404685 1.2592e-05 deg
M 251.0688797111583 1.6706e-05 deg
tp 2460521.047784697953
(2024-Jul-29.54778470)
0.00023283 TDB
period 4364.200067259936
11.95
0.00012245
3.352e-07
d
yr
n .08248934385494983 2.3145e-09 deg/d
Q 5.817289331336883 1.0882e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1544  
   data-arc span      25796 days (70.63 yr)  
   first obs. used      1950-07-19  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47127  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:48:12  

Additional Information
 Earth MOID = 3.63752 au 
 Jupiter MOID = .38401 au 
 T_jup = 2.704 
[ 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 10.73   n/a E2021B10  
diameter diameter 38.583 km 0.475 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 8.84 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:
[French, L.M.; Stephens, R.D.; Coley, D.R.; Megna, R.; Wasserman, L.H. (2012) Minor Planet Bull. 39, 183-187.]
geometric albedo albedo 0.082   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

16956 (1998 MQ11)          Discovered 1998-Jun-19 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 MQ11 = 1990 WX2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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