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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06812508644192986 1.4406e-08  
a 2.710404467369319 1.1933e-08 au
q 2.525757928737192 4.359e-08 au
i 7.624238852397448 7.5086e-07 deg
node 25.37647103522532 4.2922e-06 deg
peri 319.1694872096674 1.5339e-05 deg
M 324.062107376303 1.6278e-05 deg
tp 2459559.204546813397
(2021-Dec-10.70454681)
7.3852e-05 TDB
period 1629.857305940092
4.46
1.0764e-05
2.947e-08
d
yr
n .2208782319089916 1.4587e-09 deg/d
Q 2.895051006001447 1.2746e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2256  
   data-arc span      12654 days (34.64 yr)  
   first obs. used      1986-10-28  
   last obs. used      2021-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48322  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 02:49:21  

Additional Information
 Earth MOID = 1.52413 au 
 Jupiter MOID = 2.38704 au 
 T_jup = 3.347 
[ 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 13.55   n/a MPCxxxxx  
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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