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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06603124449407083 3.6855e-08  
a 2.78442126344807 1.3837e-08 au
q 2.600562462226841 1.0141e-07 au
i 1.135902953423396 3.8771e-06 deg
node 129.4508617203299 0.00020419 deg
peri 194.8510895468453 0.00020636 deg
M 163.2035130366892 2.9873e-05 deg
tp 2458231.143120654124
(2018-Apr-22.64312065)		 0.00014116 TDB
period 1697.074232110745
4.65		 1.265e-05
3.463e-08		 d
yr
n .2121297897218368 1.5812e-09 deg/d
Q 2.968280064669299 1.475e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1439  
   data-arc span      10762 days (29.46 yr)  
   first obs. used      1990-08-16  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52049  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:11:02  

Additional Information
 Earth MOID = 1.58826 au 
 Jupiter MOID = 2.2362 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 14.2   n/a MPO358745  
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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