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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457156.5 (2015-May-14.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1174009496096623 1.9784e-08  
q 3.493602867047494 8.6695e-08 au
tp 2456355.768052624648
(2013-Mar-04.26805262)
6.9334e-05 TDB
node 1.531740247446826 8.8094e-06 deg
peri 214.4884630823237 1.3158e-05 deg
i 7.978409899043029 1.1564e-06 deg
  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
 Jupiter MOID = .634035 au 
 T_jup = 3.031 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.913964405701775E-16 -1.649938546404358E-15 -8.280776750262334E-14 5.337915272309919E-15 -5.567876726298679E-14 -1.730696392637904E-16
q -1.649938546404358E-15 7.516106741878479E-15 1.935124021836003E-13 -1.652193177169922E-14 2.324678915913973E-13 -1.592506927928167E-16
tp -8.280776750262334E-14 1.935124021836003E-13 4.807153519712519E-9 -8.597578564178778E-11 6.631591795141283E-10 1.174927434339931E-11
node 5.337915272309919E-15 -1.652193177169922E-14 -8.597578564178778E-11 7.760533225959119E-11 -8.78914491552006E-11 -9.100709843805546E-12
peri -5.567876726298679E-14 2.324678915913973E-13 6.631591795141283E-10 -8.78914491552006E-11 1.731380901453685E-10 1.048643857167486E-11
i -1.730696392637904E-16 -1.592506927928167E-16 1.174927434339931E-11 -9.100709843805546E-12 1.048643857167486E-11 1.337273069061637E-12

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

[ 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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