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19179 (1991 RK8)
Classification: Main-belt Asteroid          SPK-ID: 2019179
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08053606676387039 3.3493e-08  
a 2.696269881195919 1.2655e-08 au
q 2.479122910030512 9.0594e-08 au
i 10.33025920745599 3.9955e-06 deg
node 40.97698439686606 2.2213e-05 deg
peri 248.0167248375589 3.5052e-05 deg
M 243.9699756569245 2.8813e-05 deg
tp 2459521.708332496597
(2021-Nov-03.20833250)
0.00013049 TDB
period 1617.124539627598
4.43
1.1385e-05
3.117e-08
d
yr
n .2226173625952786 1.5673e-09 deg/d
Q 2.913416852361326 1.3675e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1832  
   data-arc span      14236 days (38.98 yr)  
   first obs. used      1981-05-08  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48401  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:58:13  

Additional Information
 Earth MOID = 1.4852 au 
 Jupiter MOID = 2.21179 au 
 T_jup = 3.342 
[ 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 13.5   n/a MPO502314  
diameter diameter 5.977 km 0.254 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.259   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19179 (1991 RK8)          Discovered 1991-Sep-12 by Holt, H. E. at Palomar
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RK8 = 1981 JB6 = 2000 SS119 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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