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21047 Hodierna (1990 SE5)
Classification: Outer Main-belt Asteroid          SPK-ID: 2021047
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1757166385793742 3.6222e-08  
a 3.985596758112366 3.4124e-08 au
q 3.28526109304401 1.5492e-07 au
i 4.488648081271997 4.7165e-06 deg
node 52.24208761116521 4.7352e-05 deg
peri 290.0090546924305 4.9115e-05 deg
M 304.9838957658744 1.4784e-05 deg
tp 2459644.646041394505
(2022-Mar-06.14604139)
0.00012255 TDB
period 2906.28675235865
7.96
3.7325e-05
1.022e-07
d
yr
n .1238694012928475 1.5908e-09 deg/d
Q 4.685932423180723 4.012e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1347  
   data-arc span      13796 days (37.77 yr)  
   first obs. used      1982-10-15  
   last obs. used      2020-07-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5231  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:37:18  

Additional Information
 Earth MOID = 2.27946 au 
 Jupiter MOID = .78326 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 12.98   n/a E2021B10  
diameter diameter 16.029 km 0.544 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.052   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

21047 Hodierna           Discovered 1990 Sept. 22 by E. W. Elst at the European Southern Observatory.
Giovanni Battista Hodierna (1597-1660) was a catholic priest who taught mathematics and astronomy in Ragusa, Sicily. An enthusiastic follower of Galileo, he observed the rings of Saturn and the eclipses of Jupiter's satellites. His best-known work was Medicaeorum Ephemerides.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040928/MPCPages.arcLast Updated: 2004-09-28

[ 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-20 00:59 00:02 Jupiter 1.77189338238366 1.77189291988142 1.7718938448859 4.26869510845725 4.15520072386322 2416073.541247621 1.56258072149974 56.0603139455967 20.4038403341731 85.4498420061455 4033574.87368816 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
1926-May-24 15:45 00:02 Jupiter 1.73422177098098 1.7342213223523 1.73422221960976 4.04465027068646 3.92203554690234 2424660.156444191 1.88882330413035 57.3336808171854 17.9021658176003 82.1602511056661 3754110.98204835 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
1950-Mar-18 06:20 00:02 Jupiter 1.71712047960297 1.71712000440725 1.71712095479879 4.04944228707489 3.92573831244323 2433358.763631396 2.01926151930781 58.5269018923012 18.0285843253713 80.3952883383852 3547486.24346574 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
1974-Mar-28 22:32 00:02 Jupiter 1.71699261510277 1.71699216719403 1.7169930630116 4.1679837671583 4.04789496843199 2442135.438736637 1.59643916527893 54.0183780889786 18.324207183584 81.8393865515992 3966921.65027671 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
1998-Apr-28 23:29 < 00:01 Jupiter 1.70884072110354 1.70884027198425 1.70884117022282 4.22939458346898 4.11052756565061 2450932.478371281 0.729436133483845 44.4438883862259 19.1226274248636 81.6321720660007 4067591.48926726 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
2022-Apr-22 20:03 < 00:01 Jupiter 1.69214722753879 1.69214670784718 1.6921477472304 4.19980282826853 4.07887512260861 2459692.335575778 0.534273032513458 44.6983834658873 23.1776178226586 -87.230700032041 3643692.11431543 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
2046-Jan-13 08:05 00:02 Jupiter 1.71468474136832 1.7146841106506 1.71468537208614 4.26275698899381 4.14525441698725 2468358.836476294 1.52680717349598 62.023306016714 24.7234540024918 -75.3536918277906 3542464.5755361 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
2069-Jun-22 02:31 00:02 Jupiter 1.7636228088573 1.76362222880822 1.76362338890668 4.41816550957041 4.30808984301261 2476919.605179124 2.1311435747909 70.3234353310981 22.79436623949 -77.6821209281556 4196695.23655146 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
2092-Sep-02 10:25 00:02 Jupiter 1.82882192560807 1.82882154094707 1.82882231026908 4.56906119756658 4.46654410595788 2485392.934101647 2.25567138351235 63.2560144866297 17.9469368244377 -88.0306275047235 5545825.52608605 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
2115-Oct-05 07:10 00:02 Jupiter 1.86125947991422 1.86125908831013 1.8612598715184 4.51264849249358 4.41065027280777 2493824.798911838 2.09798561118844 54.7261551203028 15.3012803983908 80.5181415092926 4703473.23291036 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
2138-Nov-09 01:32 00:02 Jupiter 1.83003828559478 1.8300378205987 1.83003875059097 4.20487823960901 4.09332538578458 2502260.563925326 1.90958882974855 49.573397098358 16.9179986873631 75.9377064699483 3903417.25775663 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
2162-Feb-04 00:57 00:02 Jupiter 1.77822254820536 1.77822209789209 1.77822299851873 3.87565297166929 3.75073645728002 2510748.539786248 1.92371465079949 47.1395203785598 15.4263631428015 75.4632043909775 3895003.31869449 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37
2185-Aug-02 14:41 00:02 Jupiter 1.72968762009019 1.72968713754839 1.7296881026321 3.66702778873243 3.53096292558579 2519329.111704558 2.09962929068133 47.5218109299846 14.9431968968281 73.9759402647269 3429876.43995115 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 03:37:29 2021-Apr-13 03:37

Alternate Designations
 1990 SE5 = 1998 SS60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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