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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1176944250233311 3.7863e-08  
a 3.952248773892152 3.6105e-08 au
q 3.487091126899749 1.5782e-07 au
i 7.979764286981726 4.5749e-06 deg
node 1.484990286378306 3.2212e-05 deg
peri 215.3167731613876 3.7917e-05 deg
M 330.264939862099 2.0651e-05 deg
tp 2459237.545195520782
(2021-Jan-23.04519552)
0.0001653 TDB
period 2869.887264115863
7.86
3.9326e-05
1.077e-07
d
yr
n .1254404674710826 1.7189e-09 deg/d
Q 4.417406420884554 4.0354e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1961  
   data-arc span      11260 days (30.83 yr)  
   first obs. used      1989-04-06  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48817  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:20:08  

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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