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153 Hilda (A875 VC)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000153
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 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1401313673536782 3.7582e-08  
a 3.977789480428875 2.6203e-08 au
q 3.4203764014913 1.5315e-07 au
i 7.825017867304179 4.018e-06 deg
node 228.1043930084303 3.1613e-05 deg
peri 39.24003556085096 3.5267e-05 deg
M 273.9634012150314 1.8819e-05 deg
tp 2460089.035199029379
(2023-May-24.53519903)
0.00015527 TDB
period 2897.751365946998
7.93
2.8633e-05
7.839e-08
d
yr
n .1242342611690394 1.2276e-09 deg/d
Q 4.53520255936645 2.9875e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3556  
   data-arc span      51567 days (141.18 yr)  
   first obs. used      1880-05-15  
   last obs. used      2021-07-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41594  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:15:48  

Additional Information
 Earth MOID = 2.40969 au 
 Jupiter MOID = .574284 au 
 T_jup = 3.023 
[ 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 7.60   n/a MPO614063 IRAS observations used: 19
diameter diameter 170.63 km 3.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
rotation period rot_per 5.9585 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Shevchenko, V.G.; Tungalag, N.; Chiorny, V.G.; Gaftonyuk, N.M.; et al. (2009) Plan. Space Sci. 57, 1514-1520.]
[Warner, B.D.; Stephens, R.D.; Coley, D.R. (2017) Minor Planet Bull. 44, 36-41.]
[Pilcher, F. (2018) Posting on CALL web site: http://www.minorplanet.info/call.html]
[Warner, B.D.; Stephens, R.D. (2018) Minor Planet Bull. 45, 35-39.]
[Pilcher, F. (2019) Minor Planet Bull. 46, 130-131.]
[Pilcher, F.; Benishek, V. (2019) Minor Planet Bull. 46, 318-319.]
[Pilcher, F. (2020) Minor Planet Bull. 47, 192-195.]
[Warner, B.D.; Stephens, R.D. (2020) Minor Planet Bull. 47, 123-124.]
geometric albedo albedo 0.0618   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
B-V BV 0.669   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=2.32, mean=7.15, max.=12.62) deg.
U-B UB 0.243   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=2.32, mean=7.15, max.=12.62) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

153 Hilda (A875 VC)          Discovered 1875-Nov-02 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ 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
1912-Mar-31 23:06 00:01 Jupiter 1.92568116078885 1.92568073849091 1.9256815830868 4.93721770580473 4.84730920947297 2419493.462747510 1.29210641362025 71.6345238983446 19.8442358970563 -89.1027041027321 4826233.38682461 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
1935-Nov-10 02:16 00:01 Jupiter 1.9125432872255 1.91254284677449 1.9125437276765 4.87906418050044 4.78743273064463 2428116.594510987 1.40442658175184 76.7384591424116 20.123448282184 -86.5504229314251 4621289.80326239 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
1959-Jul-31 06:07 00:01 Jupiter 1.89832222771393 1.89832176890939 1.89832268651857 4.84713061467456 4.75418600156938 2436780.755065630 1.27061597539188 71.2055458468747 20.5057247260834 -84.7393078895777 4501529.26294982 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
1983-May-21 03:09 < 00:01 Jupiter 1.89934402672525 1.89934356107103 1.89934449237957 4.86043119258151 4.76779622081404 2445475.631102714 0.83691660405545 54.7995257058037 20.8592723480808 -82.7295038826113 4479186.08813465 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
2007-Mar-21 02:15 < 00:01 Jupiter 1.89578854085894 1.89578807411663 1.89578900760125 4.858516971439 4.76566929609084 2454180.593473341 0.338835501118568 42.5067850439541 21.6851121756726 -85.0658759425541 4424166.93819648 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
2031-Jan-07 13:34 < 00:01 Jupiter 1.89551210155463 1.89551162628074 1.89551257682841 4.85896523360223 4.76611261932969 2462874.065143945 0.754887574896486 52.6964660025341 22.137722264109 86.6333424524961 4385442.62240615 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
2054-Sep-24 23:31 00:01 Jupiter 1.90555205513076 1.9055515817228 1.90555252853873 4.88149567672006 4.78957150380844 2471535.479521959 1.35356685610295 73.0988404269442 21.6406827288976 85.8365460894104 4465912.0037052 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
2078-Apr-30 09:50 00:02 Jupiter 1.9163391723509 1.91633872258071 1.91633962212109 4.92135709472899 4.83070957839816 2480153.909765355 1.69977112497764 89.2852766617891 20.7247842714403 87.2061218328712 4644147.02453864 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
2101-Oct-26 08:47 00:02 Jupiter 1.93351945722089 1.93351904450145 1.93351986994033 4.96404568186288 4.87499781488249 2488732.866263014 1.73171619696385 95.1396594134769 19.4034148582133 -89.7854354568043 4908776.3634088 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
2125-Mar-23 18:08 00:02 Jupiter 1.94643912360384 1.94643872056791 1.94643952663988 4.96402427418443 4.875572443899 2497282.255784667 1.54232299868742 91.7545633763326 18.4732418174609 -87.615352395026 5075097.21189035 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
2148-Aug-13 04:36 00:01 Jupiter 1.94803497293538 1.9480345658692 1.94803538000167 4.89786637426142 4.80827179600681 2505825.691573741 1.33039132130438 85.1520913496758 18.4614503564024 -87.1137313105675 5025922.57691845 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
2172-Jan-13 20:43 00:01 Jupiter 1.94076652050314 1.94076612839594 1.94076691261034 4.78058449480434 4.68840206390678 2514379.363117543 1.32491847497438 85.0296791426507 17.9460310952914 -88.1849782183913 5038376.39132711 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16
2195-Jul-15 11:29 00:02 Jupiter 1.93285207520075 1.93285170442904 1.93285244597256 4.67242558413485 4.57767544546613 2522962.978729507 1.49571052022237 91.8227605534331 16.7783969763399 -88.3712982049499 5161367.06311257 T 53 CATAB v2.0g-lin.ifort 2021-Aug-25 06:16:25 2021-Aug-25 06:16

Alternate Designations
 A875 VC = 1935 GD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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