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JPL Small-Body Database Browser
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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1176944250233311 3.7863e-08  
a 3.952248773892152 3.6105e-08 au
q 3.487091126899749 1.5782e-07 au
i 7.979764286981726 4.5749e-06 deg
node 1.484990286378306 3.2212e-05 deg
peri 215.3167731613876 3.7917e-05 deg
M 330.264939862099 2.0651e-05 deg
tp 2459237.545195520782
(2021-Jan-23.04519552)
0.0001653 TDB
period 2869.887264115863
7.86
3.9326e-05
1.077e-07
d
yr
n .1254404674710826 1.7189e-09 deg/d
Q 4.417406420884554 4.0354e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1961  
   data-arc span      11260 days (30.83 yr)  
   first obs. used      1989-04-06  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48817  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:20:08  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1912-Sep-15 10:48 00:02 Jupiter 1.90811424740551 1.90811335217234 1.90811514263868 4.00174544747165 3.88923585225449 2419660.949959377 1.92920213185571 46.6920414055332 35.4477080684185 52.2313314350415 2274973.24385718 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 21:20:24 2020-Feb-22 21:20
1981-Jun-27 07:28 00:01 Jupiter 1.98253053589132 1.98252993404274 1.9825311377399 4.789480266661 4.69942922073682 2444782.810899135 1.30823559325367 57.06375354847 28.4022778480871 87.8652404582015 3908570.35986739 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 21:20:24 2020-Feb-22 21:20
2004-Jul-09 14:07 < 00:01 Jupiter 1.85048664794546 1.85048607359069 1.85048722230011 4.41361481661215 4.30865832325625 2453196.088260164 0.528513831478119 60.0127481957253 26.3655977006003 86.9965241948475 3501506.60308078 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 21:20:24 2020-Feb-22 21:20
2027-Dec-06 02:26 < 00:01 Jupiter 1.75748567188568 1.7574851403884 1.75748620338296 4.13522454595307 4.01698636198229 2461745.601587836 0.697371259868865 62.1414460874334 23.9867426066447 88.6819501386085 3390450.63045423 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 21:20:24 2020-Feb-22 21:20
2051-Oct-27 17:54 00:02 Jupiter 1.7533650153072 1.75336435781319 1.75336567280111 4.17058930335583 4.05310340557108 2470472.246033450 1.55087362867568 63.5247807397535 29.8741525260834 -88.0632938290307 2975184.82264517 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 21:20:24 2020-Feb-22 21:20
2076-Feb-06 07:22 00:02 Jupiter 1.81192423258677 1.81192357575897 1.81192488941456 4.33113203883168 4.22181977407783 2479339.806869591 1.94734307807284 65.1352689591784 30.4684906599616 -86.6043088831667 3391794.0919078 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 21:20:24 2020-Feb-22 21:20
2100-Jul-15 11:56 00:02 Jupiter 1.84108988527873 1.84108929593196 1.84109047462549 4.24783651447393 4.13811351060906 2488264.997339105 1.96723019568328 60.1563728297995 27.1900487495984 84.9655789006184 3653195.91149489 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 21:20:24 2020-Feb-22 21:20
2124-Nov-22 09:26 00:02 Jupiter 1.83099856186927 1.83099797708525 1.83099914665329 3.94692763325932 3.82792828078881 2497160.892974435 1.7319038224659 54.6850019849555 23.7232853784235 75.6594181871473 3307079.52395016 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 21:20:24 2020-Feb-22 21:20
2148-Dec-02 03:01 00:02 Jupiter 1.82039827390155 1.8203976136242 1.8203989341789 3.73987514973715 3.6133192226781 2505936.625932432 1.49972428518892 52.2789785600639 26.2843323240512 73.6772968072512 2776193.61052254 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 21:20:24 2020-Feb-22 21:20
2172-May-29 20:30 00:02 Jupiter 1.88942087841113 1.889420124849 1.88942163197315 4.04769991165441 3.9353881286928 2514516.354335621 1.55891126978992 52.055477110621 32.3655290057021 77.4480048621995 2448264.15390614 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 21:20:24 2020-Feb-22 21:20
2195-Jun-26 21:41 00:02 Jupiter 1.989897643942 1.98989700454772 1.98989828333628 4.66196360303796 4.56974637564628 2522944.403261485 1.58686536280082 55.9410562192607 29.3187190581396 84.8143202843085 3198735.622725 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 21:20:24 2020-Feb-22 21:20

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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