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10540 Hachigoroh (1991 VP4)
Classification: Main-belt Asteroid          SPK-ID: 2010540
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1698685830144263 3.781e-08  
a 3.100889266968175 1.4312e-08 au
q 2.574145601103648 1.1659e-07 au
i 6.735481965869869 3.4454e-06 deg
node 110.6411559562648 3.7333e-05 deg
peri 309.4174022076822 3.9456e-05 deg
M 147.1335869396144 1.2955e-05 deg
tp 2458581.350745855765
(2019-Apr-07.85074586)
7.0177e-05 TDB
period 1994.471402456614
5.46
1.3808e-05
3.78e-08
d
yr
n .1804989530341642 1.2496e-09 deg/d
Q 3.627632932832702 1.6743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1990  
   data-arc span      14828 days (40.60 yr)  
   first obs. used      1980-11-29  
   last obs. used      2021-07-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47141  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 13:00:18  

Additional Information
 Earth MOID = 1.59321 au 
 Jupiter MOID = 1.72447 au 
 T_jup = 3.189 
[ 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 13.31   n/a MPO636225  
diameter diameter 11.112 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.65653 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.082   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

10540 Hachigoroh           Discovered 1991 Nov. 13 by S. Otomo at Kiyosato.
Hachigoroh Kikuchi (1926-1999) was the executive committee chief of the Haramura star party and was instrumental in getting it started. The name was suggested by S. Horiuchi.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040713/MPCPages.arcLast Updated: 2004-07-14

[ 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
1902-Nov-13 07:20 00:03 Jupiter 1.99933756013619 1.99933642281445 1.99933869746067 3.75322556679018 3.63859849397873 2416066.805580732 2.53824356198144 140.901722727351 16.8675376180701 72.2041470963185 2986744.42357971 T 38 CATAB v2.0g-lin.ifort 2021-Aug-25 13:00:28 2021-Aug-25 13:00
1912-Dec-05 10:11 00:02 Jupiter 1.75936033205539 1.759359953002 1.75936071110917 2.23435216898482 2.00735001415372 2419741.924508295 2.39259546329041 111.292491518977 19.3628966853727 -83.3132442891375 2331076.2812501 T 38 CATAB v2.0g-lin.ifort 2021-Aug-25 13:00:28 2021-Aug-25 13:00
1922-Dec-15 06:22 00:02 Jupiter 1.93273245822296 1.93273165619082 1.93273326025764 2.11580605337415 1.89740155390901 2423403.765028336 2.16885249820143 155.176629836473 11.7961094379327 88.4088529797818 2750724.60697578 T 38 CATAB v2.0g-lin.ifort 2021-Aug-25 13:00:28 2021-Aug-25 13:00
1984-Mar-04 11:55 < 00:01 Jupiter 1.75781452658704 1.75781418591341 1.75781486726067 2.26486596053123 2.04105255684661 2445763.996271623 0.781858343927725 72.0614315247998 13.6097161458381 87.7227573179541 2818787.58564526 T 38 CATAB v2.0g-lin.ifort 2021-Aug-25 13:00:28 2021-Aug-25 13:00
1994-Mar-15 18:30 < 00:01 Jupiter 1.9316152503951 1.93161475469162 1.93161574609858 2.12882977281135 1.91178101549998 2449427.271030734 0.550142108514427 68.6810217902968 11.7796042809897 -88.8316760052316 2750176.43599285 T 38 CATAB v2.0g-lin.ifort 2021-Aug-25 13:00:28 2021-Aug-25 13:00
2055-Jun-03 09:44 < 00:01 Jupiter 1.75109504203046 1.75109473122428 1.75109535283663 2.2837290276233 2.06106717420552 2471786.905585708 0.897568712917399 70.3300416856361 15.3126839374607 88.5422231031904 3274316.74826328 T 38 CATAB v2.0g-lin.ifort 2021-Aug-25 13:00:28 2021-Aug-25 13:00
2065-Jun-13 14:14 00:01 Jupiter 1.93088119245349 1.93088052648165 1.930881858426 2.14655753942629 1.93141562314005 2475450.092983056 1.14321468262791 99.2350937876449 13.6034814043676 87.1647193110306 2738380.00680124 T 38 CATAB v2.0g-lin.ifort 2021-Aug-25 13:00:28 2021-Aug-25 13:00
2126-Sep-01 01:50 00:03 Jupiter 1.73980344952941 1.73980314962263 1.73980374943618 2.28817677446898 2.06447423546012 2497808.576272024 2.50615628358779 125.486248997603 18.5193781726134 -84.6385871306364 2755887.25241677 T 38 CATAB v2.0g-lin.ifort 2021-Aug-25 13:00:28 2021-Aug-25 13:00
2136-Sep-13 07:34 00:03 Jupiter 1.92768982330817 1.92768865119853 1.92769099542317 2.16186458576823 1.94804082333417 2501473.815091657 2.77925244815649 199.330555921534 15.0606737915509 84.199578710911 2741094.53611251 T 38 CATAB v2.0g-lin.ifort 2021-Aug-25 13:00:28 2021-Aug-25 13:00
2187-Nov-10 13:49 00:04 Jupiter 1.99526801533824 1.99526648118952 1.99526954949343 3.68787298815437 3.57090686857754 2520159.075608693 3.82973140419153 204.635927927181 16.6179273379401 73.2282964121722 3051183.8802554 T 38 CATAB v2.0g-lin.ifort 2021-Aug-25 13:00:28 2021-Aug-25 13:00
2197-Nov-29 07:29 00:04 Jupiter 1.73116494190466 1.7311646294231 1.73116525438701 2.29615865711455 2.07214544396327 2523830.811839028 4.13293100554468 205.601134277946 18.3301519128967 -84.3202188233404 2642466.41939423 T 38 CATAB v2.0g-lin.ifort 2021-Aug-25 13:00:28 2021-Aug-25 13:00

Alternate Designations
 1991 VP4 = 1980 WZ4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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