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20460 Robwhiteley (1999 LO28)
Classification: Amor [NEO]          SPK-ID: 2020460
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 236 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4120833915447155 3.5252e-08  
a 1.876650522883328 4.3735e-09 au
q 1.103314010669403 6.5901e-08 au
i 33.94175680646286 6.5036e-06 deg
node 280.0728797966588 7.7196e-06 deg
peri 283.6692448469674 1.1295e-05 deg
M 90.15695920744371 1.1852e-05 deg
tp 2458765.336298268731
(2019-Oct-08.83629827)
3.0355e-05 TDB
period 939.0171692510587
2.57
3.2825e-06
8.987e-09
d
yr
n .383379571522775 1.3402e-09 deg/d
Q 2.649987035097254 6.1757e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1285  
   data-arc span      24030 days (65.79 yr)  
   first obs. used      1954-12-30  
   last obs. used      2020-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47271  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-15 07:45:00  

Additional Information
 Earth MOID = .329679 au 
 Jupiter MOID = 2.99872 au 
 T_jup = 3.681 
[ 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 15.2   n/a MPO395199  
diameter diameter 2.716 km 0.585 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 2.7209 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:
[Pravec, P.; Wolf, M.; Sarounova, L. (2017) http://www.asu.cas.cz/~ppravec/neo.htm]
[Warner, B.D. (2018) Minor Planet Bull. 45, 19-34.]
geometric albedo albedo 0.199   0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

20460 Robwhiteley           Discovered 1999 June 13 by the Catalina Sky Survey.
Robert J. Whiteley (b. 1971) is a member of the University of Hawaii Aten Survey and the Catalina Sky Survey. He has also done research into the rotational properties of small, rapidly spinning minor planets and the taxonomic classification of near-earth asteroids.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

[ 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
2004-Jun-23 04:10 < 00:01 Earth 0.492657233328605 0.492656760718168 0.492657705939377 23.6135893710657 23.6133603330394 2453179.673508716 0.0524445013634192 34.0089870325303 13.4739895968701 51.7418745848671 4240620.31233922 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2007-Feb-28 17:22 < 00:01 Mars 0.0845388084485266 0.0845383342690286 0.0845392826285196 18.6129787266085 18.6127967832085 2454160.223422764 0.0540420453706711 26.832632799718 13.9984947689096 33.6477088487191 636585.127947422 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2022-Jun-23 08:33 < 00:01 Earth 0.482729077614977 0.482728274726895 0.482729880504458 23.355613701789 23.3553773712688 2459753.856349142 0.0649006583116779 59.3196104524659 13.3188903583826 49.2195733328894 3909437.89050435 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2040-Jun-22 14:56 < 00:01 Earth 0.476123723256225 0.476122229626364 0.476125216891173 23.1993220768122 23.1990808533762 2466328.122151205 0.0895209767758402 108.42125433884 13.6395916674072 47.0979670232754 3605697.00228325 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2058-Jun-22 20:42 < 00:01 Earth 0.468333815884286 0.468331651701722 0.468335980078085 23.021890260253 23.0216431343944 2472902.362756289 0.114757229042586 157.958011537022 13.7707950030554 47.1397487051508 3505211.57148493 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2076-Jun-22 05:49 < 00:01 Earth 0.465368556796703 0.465365757314473 0.465371356298139 22.9222428030939 22.9219930214162 2479476.742023000 0.139924481260953 204.795267000296 13.8092531120046 47.1681042256525 3470643.76278365 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2084-Apr-16 05:05 < 00:01 Mars 0.059989202730636 0.0599860260139942 0.0599923795269523 19.8909246122316 19.8906846843362 2482331.711805593 0.285792207561329 192.561437554913 14.4974596675901 -34.7612028117549 354130.454700478 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2094-Jun-22 16:33 < 00:01 Earth 0.464548614895455 0.464545294753463 0.464551935064407 22.9224137026661 22.9221634819796 2486051.189501381 0.162327572996837 242.406554018552 13.8706569115041 47.023026864912 3440494.32094401 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2112-Jun-23 07:09 < 00:01 Earth 0.469690786342889 0.469687044216452 0.46969452850163 23.0290948666464 23.0288485318463 2492625.797863457 0.178782250288602 269.765783950491 13.9218870486293 46.3131245957429 3421300.02050946 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2130-Jun-23 22:38 < 00:01 Earth 0.47475429886872 0.474750217066923 0.474758380706733 23.1437336238998 23.1434911235865 2499200.442757477 0.194014831145059 290.475979933912 13.9685092414422 45.5829774002384 3402663.58092007 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2148-Jun-23 12:59 < 00:01 Earth 0.480189320572018 0.48018503978634 0.480193601395446 23.2743359587018 23.2740975485276 2505775.040933498 0.202890503242684 301.426764619291 14.0086502132412 44.9748434028006 3393852.95954687 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2166-Jun-24 05:36 < 00:01 Earth 0.488115577285655 0.488111200659751 0.488119953948017 23.4412666827404 23.4410338142271 2512349.733173490 0.205799165950592 303.417399865625 14.0515096313545 44.064048205947 3379859.27095379 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
2184-Jun-23 22:47 < 00:01 Earth 0.496171974222733 0.496167661516933 0.496176286961446 23.6160243209996 23.6157969288693 2518924.449055334 0.204707978137811 295.003047217795 14.0800552283677 43.2591539913615 3377708.48450197 T 236 CATAB v2.0f-lin.ifort 2020-Oct-15 07:45:19 2020-Oct-15 07:45
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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