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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08058813070521174 1.813e-08  
a 2.695740323619451 1.207e-08 au
q 2.478495650072297 5.2966e-08 au
i 10.33114700384461 1.1175e-06 deg
node 40.97306505455213 7.0794e-06 deg
peri 248.1603156070789 1.7552e-05 deg
M 288.362100276101 1.8488e-05 deg
tp 2459522.203549959671
(2021-Nov-03.70354996)
8.3567e-05 TDB
period 1616.648148980354
4.43
1.0857e-05
2.972e-08
d
yr
n .2226829630350041 1.4955e-09 deg/d
Q 2.912984997166605 1.3042e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1987  
   data-arc span      14540 days (39.81 yr)  
   first obs. used      1981-05-08  
   last obs. used      2021-02-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48126  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:48:01  

Additional Information
 Earth MOID = 1.48281 au 
 Jupiter MOID = 2.21167 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 13.48   n/a E2021B10  
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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