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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696812522050391 3.8174e-08  
a 3.10162496183943 1.5067e-08 au
q 2.575337354444109 1.1728e-07 au
i 6.735454595780878 4.3223e-06 deg
node 110.6433228470122 3.8552e-05 deg
peri 309.4775761062758 4.1904e-05 deg
M 111.6984809308477 1.4993e-05 deg
tp 2458581.448018879830
(2019-Apr-07.94801888)
8.2814e-05 TDB
period 1995.181235644848
5.46
1.4538e-05
3.98e-08
d
yr
n .1804347362377067 1.3148e-09 deg/d
Q 3.627912569234752 1.7624e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1710  
   data-arc span      14658 days (40.13 yr)  
   first obs. used      1980-11-29  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47835  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:55:26  

Additional Information
 Earth MOID = 1.5941 au 
 Jupiter MOID = 1.72299 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 13.3   n/a MPO502250  
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 1.99933738093536 1.99933624223913 1.99933851963421 3.75322398477369 3.63859685104474 2416066.805562048 2.61376935980248 144.458202841263 20.7282098902694 73.2853214724148 2567627.91657079 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 01:55:29 2021-Feb-24 01:55
1912-Dec-05 10:11 00:02 Jupiter 1.75936018954603 1.75935978981381 1.75936058927845 2.23435112425037 2.00734883052295 2419741.924480202 2.4517301822968 119.585703540286 22.4169421839719 -85.0328695063218 2011049.31781881 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 01:55:29 2021-Feb-24 01:55
1922-Dec-15 06:22 00:02 Jupiter 1.9327324059244 1.93273158946977 1.93273322238122 2.11580650795727 1.89740205329188 2423403.765035627 2.21793955586645 157.68450526645 14.0745402662087 88.7475173146243 2559479.71454477 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 01:55:29 2021-Feb-24 01:55
1984-Mar-04 11:55 < 00:01 Jupiter 1.75781440954091 1.75781403999087 1.75781477909085 2.26486491550271 2.04105138020033 2445763.996232494 0.785488988519242 84.1334354020338 14.3158232029693 85.9053593718981 2545664.73095138 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 01:55:29 2021-Feb-24 01:55
1994-Mar-15 18:30 < 00:01 Jupiter 1.93161519016774 1.93161463414981 1.93161574618557 2.12883019732066 1.91178147978596 2449427.271016402 0.550292786663027 74.2860165044285 13.4180775282559 -87.1986493048705 2537648.14375142 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 01:55:29 2021-Feb-24 01:55
2055-Jun-03 09:44 < 00:01 Jupiter 1.75109492532956 1.75109457405524 1.75109527660378 2.28372815304879 2.0610661882114 2471786.905726368 0.981912747522548 85.9825962260156 16.3949332627985 86.7719916450737 2677126.43958927 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 01:55:29 2021-Feb-24 01:55
2065-Jun-13 14:14 00:01 Jupiter 1.9308809745736 1.93088019737791 1.93088175177005 2.14655753335277 1.93141558950667 2475450.093218309 1.23914712798623 113.030662280577 15.9902908459576 87.9025555025672 2524476.25004037 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 01:55:29 2021-Feb-24 01:55
2126-Sep-01 01:51 00:03 Jupiter 1.73980338868569 1.73980303780665 1.73980373956473 2.28817652432393 2.06447394865997 2497808.576913302 2.65039753549326 140.503443744817 21.7346285312091 -86.2309080265213 2233480.53418483 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 01:55:29 2021-Feb-24 01:55
2136-Sep-13 07:35 00:03 Jupiter 1.92768930895145 1.92768800554707 1.92769061236174 2.16186394238608 1.94804004790121 2501473.815849865 2.93692653363826 216.695173895229 17.9226981730839 84.5340213199549 2521432.92752079 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 01:55:29 2021-Feb-24 01:55
2187-Nov-10 13:51 00:04 Jupiter 1.99526870987341 1.99526699406033 1.99527042569318 3.68787652724026 3.57091056431201 2520159.077002944 4.01180249032291 214.33229058419 20.6261428750366 72.2166074350085 2526209.7139751 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 01:55:29 2021-Feb-24 01:55
2197-Nov-29 07:31 00:04 Jupiter 1.73116494773408 1.73116457188489 1.73116532358474 2.29615951608001 2.07214639527948 2523830.813447788 4.34145235149782 221.991797849151 22.2880158950201 -85.1090126191379 2139508.72399263 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 01:55:29 2021-Feb-24 01:55

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