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11880 (1990 QQ4)
Classification: Main-belt Asteroid          SPK-ID: 2011880
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .067822958564155 4.1737e-08  
a 2.708224545194403 1.2639e-08 au
q 2.524544744083256 1.1647e-07 au
i 7.625529791866896 4.5224e-06 deg
node 25.40806207492933 2.2455e-05 deg
peri 319.8064015236582 3.4566e-05 deg
M 235.8531747182668 2.7282e-05 deg
tp 2459561.882084819298
(2021-Dec-13.38208482)
0.00012377 TDB
period 1627.891410644746
4.46
1.1396e-05
3.12e-08
d
yr
n .221144971738267 1.5481e-09 deg/d
Q 2.89190434630555 1.3497e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2170  
   data-arc span      12341 days (33.79 yr)  
   first obs. used      1986-10-28  
   last obs. used      2020-08-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48499  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:56:41  

Additional Information
 Earth MOID = 1.52375 au 
 Jupiter MOID = 2.39251 au 
 T_jup = 3.348 
[ 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 13.5   n/a MPO473927  
diameter diameter 8.555 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.32 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:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.116   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11880 (1990 QQ4)          Discovered 1990-Aug-24 by Holt, H. E. at Palomar
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 QQ4 = 1986 UL = 1998 KB25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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