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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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .11769442701154 3.7188e-08  
a 3.952248777334177 3.3511e-08 au
q 3.487091122078771 1.5698e-07 au
i 7.979764565729444 4.5693e-06 deg
node 1.485012743540156 2.9223e-05 deg
peri 215.3167523095275 3.5089e-05 deg
M 330.2649378497961 1.9255e-05 deg
tp 2459237.545211872343
(2021-Jan-23.04521187)
0.00015375 TDB
period 2869.887267864953
7.86
3.6501e-05
9.993e-08
d
yr
n .1254404673072128 1.5954e-09 deg/d
Q 4.417406432589582 3.7455e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2142  
   data-arc span      11345 days (31.06 yr)  
   first obs. used      1989-04-06  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47116  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:11:56  

Additional Information
 Earth MOID = 2.48493 au 
 Jupiter MOID = .631892 au 
 T_jup = 3.031 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456797.5 (2014-May-20.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1171412880347047 3.7232e-08  
q 3.494403402381259 1.5716e-07 au
tp 2456355.531866433530
(2013-Mar-04.03186643)
0.00015536 TDB
node 1.543152699978023 2.9222e-05 deg
peri 214.4701539336985 3.5125e-05 deg
i 7.97734786493576 4.5672e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2142  
   data-arc span      11345 days (31.06 yr)  
   first obs. used      1989-04-06  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47116  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:11:56  

Additional Information
 Jupiter MOID = .631892 au 
 T_jup = 3.031 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.386238388829764E-15 -5.754027595734649E-15 -7.496505763481151E-13 -3.165178606354201E-15 -7.453852265632093E-14 -1.927740998549758E-16
q -5.754027595734649E-15 2.469827318074767E-14 2.319489827666251E-12 1.174319105721626E-14 2.326015222937615E-13 1.299845047896265E-15
tp -7.496505763481151E-13 2.319489827666251E-12 2.413662764411764E-8 7.372337478270057E-12 3.0537025340097E-9 4.69640869090594E-13
node -3.165178606354201E-15 1.174319105721626E-14 7.372337478270057E-12 8.539312731759059E-10 -8.447209907850226E-10 -2.292927614348821E-11
peri -7.453852265632093E-14 2.326015222937615E-13 3.0537025340097E-9 -8.447209907850226E-10 1.233739425861126E-9 2.278909331532472E-11
i -1.927740998549758E-16 1.299845047896265E-15 4.69640869090594E-13 -2.292927614348821E-11 2.278909331532472E-11 2.08594455902639E-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

[ 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 1.90811427196181 1.90811343459121 1.90811510933229 4.00174565383404 3.8892360660555 2419660.949928395 1.90146079033724 46.3591700238107 32.5150859914635 55.2032247489972 2465196.60927273 T 31 CATAB v2.0f-lin.ifort 2020-May-20 04:12:08 2020-May-20 04:12
1981-Jun-27 07:28 00:01 Jupiter 1.98253050792104 1.98252990941102 1.98253110643106 4.78948035417222 4.69942930864229 2444782.810880100 1.27319631364173 52.2834943099469 28.2662804431007 88.9757462113843 3912619.23254053 T 31 CATAB v2.0f-lin.ifort 2020-May-20 04:12:08 2020-May-20 04:12
2004-Jul-09 14:07 < 00:01 Jupiter 1.85048664373617 1.85048607090695 1.85048721656528 4.41361482305155 4.30865832961086 2453196.088265691 0.527627853721177 54.4796069376877 26.2851189665168 86.505659209704 3510018.55819878 T 31 CATAB v2.0f-lin.ifort 2020-May-20 04:12:08 2020-May-20 04:12
2027-Dec-06 02:26 < 00:01 Jupiter 1.75748569091654 1.75748516733055 1.75748621450252 4.1352245513701 4.01698636885795 2461745.601619266 0.58747777895951 56.3049788105087 23.5312692493191 87.1666680797223 3438661.5059511 T 31 CATAB v2.0f-lin.ifort 2020-May-20 04:12:08 2020-May-20 04:12
2051-Oct-27 17:54 00:01 Jupiter 1.75336503682771 1.75336442077055 1.75336565288487 4.17058936016333 4.05310346548815 2470472.246083785 1.36185781072623 57.1542365188498 28.0362584205603 -89.9328484912349 3126979.28383235 T 31 CATAB v2.0f-lin.ifort 2020-May-20 04:12:08 2020-May-20 04:12
2076-Feb-06 07:22 00:02 Jupiter 1.81192423188336 1.81192362812094 1.81192483564577 4.33113215008804 4.22181988817187 2479339.806923579 1.71701442723904 58.5439582672712 28.0521284558207 -88.2809147055056 3553434.12428643 T 31 CATAB v2.0f-lin.ifort 2020-May-20 04:12:08 2020-May-20 04:12
2100-Jul-15 11:56 00:02 Jupiter 1.84108985993971 1.84108930810811 1.84109041177131 4.24783665828486 4.13811365670303 2488264.997388862 1.74502211080026 55.3289776413931 24.976462735527 83.4690320662082 3731322.35035589 T 31 CATAB v2.0f-lin.ifort 2020-May-20 04:12:08 2020-May-20 04:12
2124-Nov-22 09:26 00:02 Jupiter 1.83099853141412 1.83099796836331 1.83099909446504 3.94692787210085 3.82792852504515 2497160.892993369 1.58089939339999 51.9059344422184 22.1385245468633 74.6357546896375 3354491.52785263 T 31 CATAB v2.0f-lin.ifort 2020-May-20 04:12:08 2020-May-20 04:12
2148-Dec-02 03:01 00:01 Jupiter 1.82039825190771 1.82039763035564 1.82039887345978 3.73987543084147 3.61331951207224 2505936.625934313 1.46626590755147 50.4185826385679 23.8918640941832 72.714871014204 2891071.32338484 T 31 CATAB v2.0f-lin.ifort 2020-May-20 04:12:08 2020-May-20 04:12
2172-May-29 20:30 00:02 Jupiter 1.88942085613319 1.88942017538722 1.88942153687916 4.04770020795165 3.9353884321029 2514516.354331013 1.55701392146212 49.8007693336938 28.7565591527059 76.5624204790426 2670220.99992249 T 31 CATAB v2.0f-lin.ifort 2020-May-20 04:12:08 2020-May-20 04:12
2195-Jun-26 21:41 00:02 Jupiter 1.98989761973771 1.98989704216501 1.98989819731042 4.66196375970017 4.5697465343369 2522944.403274500 1.56637868009769 52.636573917045 26.5152952437273 85.1956507346314 3541277.47937419 T 31 CATAB v2.0f-lin.ifort 2020-May-20 04:12:08 2020-May-20 04:12

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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