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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1176944261796203 3.7076e-08  
a 3.952248775354103 3.2944e-08 au
q 3.487091123619695 1.5686e-07 au
i 7.97976447157953 4.5673e-06 deg
node 1.485017524603319 2.817e-05 deg
peri 215.3167466500447 3.416e-05 deg
M 330.2649391268126 1.8905e-05 deg
tp 2459237.545201513944
(2021-Jan-23.04520151)
0.00015086 TDB
period 2869.887265708237
7.86
3.5883e-05
9.824e-08
d
yr
n .1254404674014812 1.5684e-09 deg/d
Q 4.417406427088511 3.6822e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2275  
   data-arc span      11420 days (31.27 yr)  
   first obs. used      1989-04-06  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46215  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:33:14  

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

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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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