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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05813119273371193 3.6019e-08  
a 3.416550571441636 1.8507e-08 au
q 3.217942411688689 1.2548e-07 au
i 6.277475429192089 4.2405e-06 deg
node 41.45909060524941 3.2907e-05 deg
peri 12.14543001711242 4.8205e-05 deg
M 36.5477495845591 3.3881e-05 deg
tp 2458766.326176540313
(2019-Oct-09.82617654)
0.00021712 TDB
period 2306.642061515711
6.32
1.8742e-05
5.131e-08
d
yr
n .1560710289672952 1.2681e-09 deg/d
Q 3.615158731194584 1.9583e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3042  
   data-arc span      16216 days (44.40 yr)  
   first obs. used      1975-12-02  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40775  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:49:46  

Additional Information
 Earth MOID = 2.22914 au 
 Jupiter MOID = 1.66983 au 
 T_jup = 3.131 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456706.5 (2014-Feb-18.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05373872898284932 3.5837e-08  
q 3.238304565273569 1.2394e-07 au
tp 2456483.202410451681
(2013-Jul-09.70241045)
0.00023847 TDB
node 41.83785873365267 3.2911e-05 deg
peri 15.72256717049851 5.0404e-05 deg
i 6.274992529242645 4.2341e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3042  
   data-arc span      16216 days (44.40 yr)  
   first obs. used      1975-12-02  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40775  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:49:46  

Additional Information
 Jupiter MOID = 1.66983 au 
 T_jup = 3.131 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.284293283746226E-15 -4.394190254934542E-15 -1.84900805060282E-12 4.539267302769219E-15 -3.065086721591833E-13 -2.694950761276726E-16
q -4.394190254934542E-15 1.536014513404508E-14 5.393881828299922E-12 -9.410905732664301E-15 9.011036926393667E-13 4.004371536667838E-16
tp -1.84900805060282E-12 5.393881828299922E-12 5.686700106046305E-8 -1.906019217747335E-11 9.124982384709366E-9 -2.460939053664386E-12
node 4.539267302769219E-15 -9.410905732664301E-15 -1.906019217747335E-11 1.083114885461076E-9 -1.078982572755357E-9 -2.301350098397373E-11
peri -3.065086721591833E-13 9.011036926393667E-13 9.124982384709366E-9 -1.078982572755357E-9 2.540582190044E-9 2.240858130311127E-11
i -2.694950761276726E-16 4.004371536667838E-16 -2.460939053664386E-12 -2.301350098397373E-11 2.240858130311127E-11 1.792800000417031E-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-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:
[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 23:15 00:03 Jupiter 1.90036826996737 1.90036747905962 1.90036906087565 3.72326761218611 3.60156797052135 2417504.468514926 3.11117001018191 72.6209818546738 16.9727455730142 -60.8616338380289 4722131.55244358 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
1920-Mar-28 21:38 00:03 Jupiter 1.98196610583101 1.98196569567883 1.98196651598342 3.49331511197118 3.36875658135745 2422412.401679600 2.69647384771508 67.7205933431298 14.0480671749079 -80.44153041584 4594934.95876714 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
1933-Aug-27 21:03 00:02 Jupiter 1.91083685073054 1.9108363698249 1.9108373316365 3.22882883488062 3.08849308017676 2427312.376757981 2.26828480338918 99.654110628877 16.5561484983349 84.4485168821655 3509325.13737392 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
1947-Jan-23 08:15 00:02 Jupiter 1.76417538659717 1.76417488480624 1.76417588838819 2.82656919621209 2.65127250685911 2432208.843643430 1.90273973002721 62.2174606754967 12.4410416883416 79.2788493768666 2661074.81155139 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
1960-Jul-15 14:39 00:02 Jupiter 1.64040352038026 1.64040309037804 1.64040395038238 2.23016587464328 1.98518000083463 2437131.110464087 1.61283213483712 63.4749916545019 6.63192845551479 79.1321308897987 2780228.55085373 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
1974-Feb-12 08:02 00:01 Jupiter 1.58972707770695 1.58972665346491 1.5897275019489 2.37062764422871 2.13407014596675 2442090.834514756 1.22269939922562 64.5234368462815 14.8705797489268 -88.0254823982152 2813802.15551622 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
1987-Aug-23 06:42 < 00:01 Jupiter 1.64398218456337 1.64398175780073 1.64398261132601 3.27688121476834 3.11568584941784 2447030.779068349 0.770389319108504 61.6106973186803 15.6175861441698 -85.0124515857418 3103009.30946162 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2001-Feb-09 03:10 < 00:01 Jupiter 1.82542132110904 1.82542092938386 1.82542171283422 3.67361124985339 3.54505148169123 2451949.631626404 0.407754756570211 37.926933389688 14.6090354442516 -76.9032874084741 4205332.68051056 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2014-Jul-23 02:14 < 00:01 Jupiter 1.97535807981895 1.97535769300718 1.97535846663084 3.61458651598917 3.49394431094268 2456861.592835933 0.200446477292227 39.1379740873972 14.2998145071452 -76.7288383498408 4747387.43911158 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2027-Dec-22 15:58 < 00:01 Jupiter 1.96282313182042 1.9628226979732 1.96282356566764 3.41368264704179 3.28483845291649 2461762.165238735 0.450222379051855 45.4551621170878 17.5195413685753 -89.7287077581946 3821317.97423689 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2041-May-16 19:11 < 00:01 Jupiter 1.83248347150518 1.83248300214266 1.83248394086781 3.05732576913607 2.90220394795409 2466656.299441193 0.816985842375091 64.1850831226003 14.6458187293954 80.5772718818133 3141194.58854135 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2054-Oct-23 20:11 00:01 Jupiter 1.69388937204297 1.69388895789588 1.69388978619007 2.46472946368828 2.25273154956433 2471564.340869674 1.26899739456986 54.0106534775073 8.23775082979927 80.2718425218594 2917195.13822036 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2068-May-11 22:19 00:02 Jupiter 1.5948017109439 1.5948013063884 1.5948021154993 2.12278209068598 1.85579485681596 2476513.429518013 1.78416209697358 67.6369082324369 21.1416499704633 -85.891121905933 3055358.3518235 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2081-Dec-04 19:58 00:02 Jupiter 1.58676343175807 1.58676296228306 1.58676390123299 2.91468447930928 2.72539451888049 2481468.332108251 2.10769107181349 89.456462362758 14.1238577439065 -88.1672566254077 2448838.96708424 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2095-May-31 20:02 00:02 Jupiter 1.74652925347081 1.74652858363682 1.7465299233049 3.5459930068716 3.40648161414822 2486394.334983792 2.42156444985455 51.0311192386641 21.9406825327481 -63.9410870727999 3176309.70227632 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2108-Nov-14 15:09 00:03 Jupiter 1.93310264778528 1.93310216771845 1.93310312785243 3.64261442326729 3.52027059804595 2491309.131353354 2.76673904943458 58.7313698227294 13.2378590092632 -70.6760013437728 5068513.72185758 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2122-Apr-20 14:24 00:03 Jupiter 1.99051805351231 1.9905176082862 1.99051849873864 3.55624054596447 3.43449988568918 2496214.099722788 3.08104014261763 83.0656520454336 17.1278292202106 85.4661843636877 4387704.04515322 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2135-Sep-12 18:12 00:03 Jupiter 1.90353501469607 1.90353420598817 1.90353582340678 3.2962103465402 3.15833116960154 2501107.258110682 3.43058923009335 146.884145781668 17.0106635087001 78.6722574658618 3366319.95424965 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2149-Feb-09 18:18 00:04 Jupiter 1.75259623314217 1.75259539237047 1.75259707391358 2.73049253907908 2.54735112856107 2506006.262751947 3.96626829697092 52.2988678653277 21.5521667095948 78.3403250968907 1575431.59058503 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2162-Aug-16 19:43 00:05 Jupiter 1.62880657105699 1.62880594315291 1.62880719896218 2.1142565957143 1.85203348558781 2510942.321457383 4.71364706561001 131.083021094106 16.6448496567148 -87.6078151775596 3234278.8436495 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2176-Mar-15 13:29 00:05 Jupiter 1.56271576954792 1.56271536900919 1.56271617008664 2.55462158807419 2.33282068228639 2515902.061656769 5.06081116714159 173.805804574071 16.4883683164833 -79.1688051885879 2341087.76423837 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50
2189-Sep-19 03:15 00:05 Jupiter 1.65498020235602 1.65497894416306 1.6549814605487 3.30761143968543 3.14907748827048 2520837.635556956 5.25787204328669 54.0319428021126 50.8980774451669 49.0842124014315 1532776.70211403 T 31 CATAB v2.0f-lin.ifort 2020-May-20 02:49:59 2020-May-20 02:50

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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