Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1172340712432924 1.9692e-08  
a 3.950125084688998 2.7373e-08 au
q 3.487035839090651 8.6003e-08 au
i 7.980950556169035 1.158e-06 deg
node 1.488346755651046 8.8193e-06 deg
peri 215.427255222718 1.3226e-05 deg
M 19.86493422913487 9.3308e-06 deg
tp 2459238.266173736962
(2021-Jan-23.76617374)
7.3751e-05 TDB
period 2867.574430281634
7.85
2.9807e-05
8.161e-08
d
yr
n .1255416411160575 1.3049e-09 deg/d
Q 4.413214330287344 3.0582e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2498  
   data-arc span      11769 days (32.22 yr)  
   first obs. used      1989-04-06  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44914  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 03:51:20  

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

[ 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-01 16:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin