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11879 (1990 QR1)
Classification: Main-belt Asteroid          SPK-ID: 2011879
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06616738838834522 3.6739e-08  
a 2.784054796843915 1.3756e-08 au
q 2.599841161806708 1.01e-07 au
i 1.135997326494147 3.8694e-06 deg
node 129.4517742740552 0.00020197 deg
peri 194.9494301930083 0.00020412 deg
M 205.521527613268 2.9606e-05 deg
tp 2459928.582446518489
(2022-Dec-15.08244652)
0.00013956 TDB
period 1696.739207068755
4.65
1.2576e-05
3.443e-08
d
yr
n .2121716752345973 1.5725e-09 deg/d
Q 2.968268431881122 1.4667e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1478  
   data-arc span      11107 days (30.41 yr)  
   first obs. used      1990-08-16  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51677  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:10:01  

Additional Information
 Earth MOID = 1.58559 au 
 Jupiter MOID = 2.23586 au 
 T_jup = 3.328 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.21   n/a E2021B10  
diameter diameter 8.208 km 0.202 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11879 (1990 QR1)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 QR1 = 1997 AE14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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