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117221 (2004 RL307)
Classification: Main-belt Asteroid          SPK-ID: 2117221
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1819163696218322 3.7171e-08  
a 2.444352266381536 1.1585e-08 au
q 1.999684576004509 8.9494e-08 au
i 5.678936758493807 5.2414e-06 deg
node 255.0778880260211 5.7386e-05 deg
peri 310.9472797509646 6.0513e-05 deg
M 168.8868069349938 2.0854e-05 deg
tp 2458345.656769778185
(2018-Aug-15.15676978)
7.9062e-05 TDB
period 1395.867250723695
3.82
9.9235e-06
2.717e-08
d
yr
n .2579041809408136 1.8335e-09 deg/d
Q 2.889019956758563 1.3692e-08 au
  Orbit Determination Parameters
   # obs. used (total)      419  
   data-arc span      7471 days (20.45 yr)  
   first obs. used      1999-03-21  
   last obs. used      2019-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54547  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:16:41  

Additional Information
 Earth MOID = 1.0004 au 
 Jupiter MOID = 2.10384 au 
 T_jup = 3.470 
[ 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 16.0   n/a MPO436562  
diameter diameter 2.565 km 0.878 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.107   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117221 (2004 RL307)          Discovered 2004-Sep-13 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2004 RL307 = 2003 KF19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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