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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1176944264078942 3.7078e-08  
a 3.952248776100631 3.2987e-08 au
q 3.487091123376165 1.5686e-07 au
i 7.97976453960626 4.568e-06 deg
node 1.485015657967619 2.8246e-05 deg
peri 215.316748923426 3.4229e-05 deg
M 330.2649385567874 1.8937e-05 deg
tp 2459237.545206125295
(2021-Jan-23.04520613)
0.00015112 TDB
period 2869.887266521362
7.86
3.593e-05
9.837e-08
d
yr
n .1254404673659401 1.5705e-09 deg/d
Q 4.417406428825097 3.6869e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2252  
   data-arc span      11394 days (31.20 yr)  
   first obs. used      1989-04-06  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46251  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:50:38  

Additional Information
 Earth MOID = 2.48493 au 
 Jupiter MOID = .631892 au 
 T_jup = 3.031 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456895.5 (2014-Aug-26.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1172029633243103 3.7125e-08  
q 3.494225954296609 1.5706e-07 au
tp 2456355.525434590039
(2013-Mar-04.02543459)
0.00015369 TDB
node 1.538885854998054 2.8243e-05 deg
peri 214.4684145192848 3.4256e-05 deg
i 7.977547995352892 4.5661e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2252  
   data-arc span      11394 days (31.20 yr)  
   first obs. used      1989-04-06  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46251  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:50:38  

Additional Information
 Jupiter MOID = .631892 au 
 T_jup = 3.031 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.378274718022703E-15 -5.737808270031628E-15 -8.112044080678641E-13 -1.613639292099829E-15 -8.301197958232689E-14 -2.250208722583121E-16
q -5.737808270031628E-15 2.466843444650049E-14 2.450481179435982E-12 4.718569763761516E-15 2.543157577892177E-13 1.434596269560359E-15
tp -8.112044080678641E-13 2.450481179435982E-12 2.362118355962398E-8 1.24535427162606E-12 3.001566293183335E-9 4.844905055938561E-13
node -1.613639292099829E-15 4.718569763761516E-15 1.24535427162606E-12 7.976900968916625E-10 -7.897857135272233E-10 -2.219903937336971E-11
peri -8.301197958232689E-14 2.543157577892177E-13 3.001566293183335E-9 -7.897857135272233E-10 1.173506201199527E-9 2.206954170531889E-11
i -2.250208722583121E-16 1.434596269560359E-15 4.844905055938561E-13 -2.219903937336971E-11 2.206954170531889E-11 2.08493423443725E-11

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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