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19642 (1999 RK94)
Classification: Main-belt Asteroid          SPK-ID: 2019642
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1248739270258123 5.3401e-08  
a 2.977762759694855 1.6232e-08 au
q 2.605917830140538 1.5408e-07 au
i 15.54021812391301 4.9564e-06 deg
node 12.90254029823505 1.5846e-05 deg
peri 26.92225523776472 2.7244e-05 deg
M 19.87221964007949 1.8583e-05 deg
tp 2459096.895779833386
(2020-Sep-04.39577983)
9.7192e-05 TDB
period 1876.867301967476
5.14
1.5347e-05
4.202e-08
d
yr
n .1918089785157536 1.5684e-09 deg/d
Q 3.349607689249172 1.8259e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1387  
   data-arc span      18235 days (49.92 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-02-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5249  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:00:10  

Additional Information
 Earth MOID = 1.61954 au 
 Jupiter MOID = 2.15036 au 
 T_jup = 3.194 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.96   n/a E2021B10  
diameter diameter 12.010 km 2.722 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.033   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

19642 (1999 RK94)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RK94 = 2294 T-1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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