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7710 Ishibashi (1994 WT2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2007710
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05777359870648945 3.6405e-08  
a 3.415325818754118 1.915e-08 au
q 3.218010155449504 1.2759e-07 au
i 6.278872164195342 4.3894e-06 deg
node 41.463733602249 3.5021e-05 deg
peri 12.31994194232744 5.0841e-05 deg
M 333.9471311085387 3.5947e-05 deg
tp 2458767.339812052491
(2019-Oct-10.83981205)
0.00023029 TDB
period 2305.401857627349
6.31
1.9389e-05
5.308e-08
d
yr
n .1561549882546296 1.3133e-09 deg/d
Q 3.61264148205873 2.0256e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2894  
   data-arc span      16075 days (44.01 yr)  
   first obs. used      1975-12-02  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41454  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 22:30:31  

Additional Information
 Earth MOID = 2.22878 au 
 Jupiter MOID = 1.67159 au 
 T_jup = 3.131 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456534.5 (2013-Aug-30.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05253611690409225 3.6215e-08  
q 3.238513300187624 1.256e-07 au
tp 2456482.510868009981
(2013-Jul-09.01086801)
0.00025442 TDB
node 41.89073289394106 3.4984e-05 deg
peri 15.56576615285498 5.3533e-05 deg
i 6.281516689015194 4.3841e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2894  
   data-arc span      16075 days (44.01 yr)  
   first obs. used      1975-12-02  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41454  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 22:30:31  

Additional Information
 Jupiter MOID = 1.67159 au 
 T_jup = 3.131 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.311512750559609E-15 -4.499594940062214E-15 -2.207738960217976E-12 -4.787141687676197E-16 -3.558691974569408E-13 3.308550552965356E-16
q -4.499594940062214E-15 1.577561573432926E-14 6.981441957717927E-12 2.86758316710357E-15 1.129214474409532E-12 -5.868353972904048E-16
tp -2.207738960217976E-12 6.981441957717927E-12 6.472703351666648E-8 -1.159814844528789E-11 1.033515444823469E-8 -3.054431235881816E-12
node -4.787141687676197E-16 2.86758316710357E-15 -1.159814844528789E-11 1.223881776882104E-9 -1.217505808879838E-9 -3.652312733252099E-11
peri -3.558691974569408E-13 1.129214474409532E-12 1.033515444823469E-8 -1.217505808879838E-9 2.865797743628144E-9 3.572402685588208E-11
i 3.308550552965356E-16 -5.868353972904048E-16 -3.054431235881816E-12 -3.652312733252099E-11 3.572402685588208E-11 1.922015221857632E-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 12.4   n/a MPO365341  
diameter diameter 17.498 km 0.368 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.521 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.069   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7710 Ishibashi           Discovered 1994 Nov. 30 by T. Kobayashi at Oizumi.
Tadashi Ishibashi (b. 1926), retired sea captain, became interested in stars in 1936 and has observed meteors since 1940. Since 1947 he has collected and studied ancient documents about the stars. Currently he lectures on star topics aboard large passenger ships.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030806/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
1906-Oct-20 23:14 00:03 Jupiter 1.90036801893156 1.90036721680914 1.90036882105462 3.72326672461951 3.60156703661525 2417504.468266278 3.18057876428201 75.3008584785368 17.5370386271454 -61.6316764065443 4699699.114014 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
1920-Mar-28 21:38 00:03 Jupiter 1.9819659567944 1.98196553562867 1.98196637796025 3.4933149428612 3.36875639645518 2422412.401474180 2.75838632920822 69.3879840537829 14.8622631726607 -81.110883440023 4340312.2155019 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
1933-Aug-27 21:02 00:02 Jupiter 1.91083688465226 1.91083636878069 1.91083740052427 3.22882885217584 3.08849310080573 2427312.376592958 2.32386618098301 102.708377988378 17.2825254209885 83.7438835867751 3336747.92825197 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
1947-Jan-23 08:15 00:02 Jupiter 1.76417554134509 1.76417501875548 1.7641760639348 2.82656917238045 2.65127249733657 2432208.843536092 1.95082500598406 63.3610466657109 12.9496597567683 79.0848474822984 2580522.04111207 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
1960-Jul-15 14:39 00:02 Jupiter 1.6404035983554 1.64040315891656 1.64040403779415 2.23016620612381 1.98518038558605 2437131.110377437 1.65229848288516 67.3246160276819 6.76614501291487 78.9542526452516 2755414.19090557 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
1974-Feb-12 08:02 00:01 Jupiter 1.58972700479721 1.5897265637087 1.58972744588562 2.37062757702656 2.13407005986481 2442090.834428192 1.24807171509875 65.6254591742354 14.9016280125415 -87.8905286677725 2626147.69761436 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
1987-Aug-23 06:42 < 00:01 Jupiter 1.64398205871764 1.64398161301954 1.64398250441565 3.2768801716109 3.11568473963224 2447030.779038826 0.779928857583007 61.8888478335772 16.2776144830829 -84.5993491295944 2954641.88115061 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2001-Feb-09 03:10 < 00:01 Jupiter 1.82542115680192 1.825420759651 1.82542155395284 3.67361012128157 3.54505030041067 2451949.631670219 0.408203156517664 40.4959005076911 14.6749273324896 -77.2197890431114 4186202.41472391 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2014-Jul-23 02:14 < 00:01 Jupiter 1.97535790293426 1.97535750690687 1.97535829896165 3.61458595980501 3.49394372456457 2456861.592928792 0.211499419101695 40.8920605806292 14.4465445690959 -76.409830339318 4674174.2678723 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2027-Dec-22 15:58 < 00:01 Jupiter 1.96282303979175 1.96282259747233 1.96282348211106 3.41368241491194 3.28483820552216 2461762.165369233 0.46972474633709 45.5289444065782 17.8139938825487 -89.4738953584954 3686320.02379473 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2041-May-16 19:11 < 00:01 Jupiter 1.83248351071232 1.83248303859756 1.8324839828272 3.05732547903504 2.90220364575488 2466656.299613632 0.84290084373005 64.2419864814284 14.9160927814315 80.7026035696555 3083030.15312097 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2054-Oct-23 20:11 00:01 Jupiter 1.69388943425489 1.69388901367469 1.69388985483509 2.46472928829643 2.25273136581934 2471564.341112280 1.30667035626544 57.1729572042931 8.33940407209012 80.4808105865089 2900914.72367102 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2068-May-11 22:19 00:02 Jupiter 1.59480166303757 1.59480123566394 1.59480209041112 2.12278265578145 1.85579549461292 2476513.429777664 1.83879570017699 71.233533808125 21.4808728097596 -86.227495682192 2970094.55154755 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2081-Dec-04 19:59 00:02 Jupiter 1.58676337569474 1.58676290035657 1.5867638510329 2.91468426800982 2.72539428598518 2481468.332396192 2.17602916906978 93.5076173795705 14.6368962285886 -87.4894064727811 2377371.40119824 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2095-May-31 20:03 00:03 Jupiter 1.74652921993441 1.7465285438143 1.74652989605462 3.54599201253704 3.40648057635728 2486394.335328247 2.50299371027889 52.1997051674306 22.3171459563624 -64.4468498073491 3176570.24076961 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2108-Nov-14 15:10 00:03 Jupiter 1.93310253026565 1.93310202768721 1.93310303284441 3.64261360726149 3.52026974611366 2491309.131754217 2.85858551253703 61.6621690299548 13.5312603030884 -70.463970264853 5021109.44445376 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2122-Apr-20 14:24 00:03 Jupiter 1.9905178980419 1.9905174489042 1.99051834717972 3.5562401097444 3.43449942432954 2496214.100142815 3.17669095279503 84.7945202166276 17.4857998036395 85.9792367934745 4196098.64422491 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2135-Sep-12 18:12 00:04 Jupiter 1.90353492916187 1.90353411999815 1.9035357383284 3.2962098194789 3.15833061320025 2501107.258565306 3.53030373995986 149.502496078015 17.5294430762006 78.9533301748672 3278802.92052758 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2149-Feb-09 18:19 00:04 Jupiter 1.75259621662718 1.75259536859342 1.75259706466053 2.73049189480122 2.54735043617513 2506006.263277874 4.07811350425658 54.2251788069757 21.8668214998434 79.2250205003671 1560272.47379374 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2162-Aug-16 19:44 00:05 Jupiter 1.62880650836125 1.62880585305636 1.62880716366724 2.11425689339653 1.85203381460984 2510942.322055731 4.84645896803745 135.65962865931 17.7284006827468 -87.9056223153035 3158603.07498766 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2176-Mar-15 13:30 00:05 Jupiter 1.5627157092198 1.56271529046887 1.56271612797055 2.55462223911847 2.33282138626131 2515902.062258134 5.20714330697337 180.563711497195 16.7119569878816 -78.9803638893902 2236415.05689575 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30
2189-Sep-19 03:16 00:05 Jupiter 1.6549802906438 1.65497901864304 1.65498156264418 3.30761093198128 3.14907696367715 2520837.636205020 5.41374026931491 55.3900500137009 50.9667986862688 48.8675114905959 1521955.2182673 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:30:46 2019-Dec-13 22:30

Alternate Designations
 1994 WT2 = 1975 XN3 = 1981 UY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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