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JPL Small-Body Database Browser
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15505 (1999 RF56)
Classification: Outer Main-belt Asteroid          SPK-ID: 2015505
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1176944233167062 3.8532e-08  
a 3.952248771042232 3.8577e-08 au
q 3.487091131130256 1.5866e-07 au
i 7.979763892656123 4.5915e-06 deg
node 1.48497995665215 3.3799e-05 deg
peri 215.3167824134617 3.9611e-05 deg
M 330.2649413366177 2.1965e-05 deg
tp 2459237.545183509657
(2021-Jan-23.04518351)		 0.00017615 TDB
period 2869.887261011701
7.86		 4.2019e-05
1.15e-07		 d
yr
n .125440467606763 1.8366e-09 deg/d
Q 4.417406410954209 4.3118e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1920  
   data-arc span      11230 days (30.75 yr)  
   first obs. used      1989-04-06  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49274  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:49:51  

Additional Information
 Earth MOID = 2.48493 au 
 Jupiter MOID = .631892 au 
 T_jup = 3.031 
[ 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 11.5   n/a MPO347647  
diameter diameter 24.788 km 0.344 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 15.11 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D.; Stephens, R.D.; Coley, D.R. (2017) Minor Planet Bull. 44, 130-137.]
geometric albedo albedo 0.079   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

15505 (1999 RF56)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RF56 = 1989 GG5 = 1997 EV46 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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