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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1172340712254198 1.9692e-08  
a 3.950125084478431 2.723e-08 au
q 3.487035838975369 8.597e-08 au
i 7.980950529818569 1.1568e-06 deg
node 1.488346950180308 8.8108e-06 deg
peri 215.4272549258018 1.3202e-05 deg
M 19.86493436203401 9.28e-06 deg
tp 2459238.266172691009
(2021-Jan-23.76617269)
7.336e-05 TDB
period 2867.574430052344
7.85
2.9651e-05
8.118e-08
d
yr
n .1255416411260958 1.2981e-09 deg/d
Q 4.413214329981494 3.0422e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2533  
   data-arc span      11813 days (32.34 yr)  
   first obs. used      1989-04-06  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44676  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 21:27:29  

Additional Information
 Earth MOID = 2.48548 au 
 Jupiter MOID = .634035 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 11.59   n/a MPO614063  
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. 2020-October); 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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