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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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06603124485332512 3.6767e-08  
a 2.784421263496174 1.3747e-08 au
q 2.600562461271453 1.0105e-07 au
i 1.135902874235665 3.8714e-06 deg
node 129.4508509744786 0.00020215 deg
peri 194.8510999213976 0.0002043 deg
M 163.2035133613122 2.9701e-05 deg
tp 2458231.143119103883
(2018-Apr-22.64311910)
0.00014028 TDB
period 1697.074232154723
4.65
1.2568e-05
3.441e-08
d
yr
n .2121297897163396 1.571e-09 deg/d
Q 2.968280065720895 1.4655e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1474  
   data-arc span      10862 days (29.74 yr)  
   first obs. used      1990-08-16  
   last obs. used      2020-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51712  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:56:41  

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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