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JPL Small-Body Database Browser
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545 Messalina (A904 TC)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000545
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696453725851986 3.2919e-08  
a 3.202996242634669 1.4824e-08 au
q 2.65962275166392 1.0596e-07 au
i 11.20185577279826 4.3397e-06 deg
node 333.616016879441 1.729e-05 deg
peri 330.8662654607402 2.1432e-05 deg
M 117.2140872135758 1.311e-05 deg
tp 2457918.773180348966
(2017-Jun-14.27318035)
7.6729e-05 TDB
period 2093.789756065662
5.73
1.4536e-05
3.98e-08
d
yr
n .1719370337719382 1.1936e-09 deg/d
Q 3.746369733605418 1.7339e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2680  
   data-arc span      42060 days (115.15 yr)  
   first obs. used      1904-10-03  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44318  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:08:49  

Additional Information
 Earth MOID = 1.65067 au 
 Jupiter MOID = 1.58823 au 
 T_jup = 3.141 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455223.5 (2010-Jan-27.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1689003327469047 3.1653e-08  
q 2.661622502597165 1.0004e-07 au
tp 2455796.218488618920
(2011-Aug-22.71848862)
7.9127e-05 TDB
node 334.2467941023222 1.7488e-05 deg
peri 326.2605003182911 2.1479e-05 deg
i 11.1248393544445 4.3128e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2680  
   data-arc span      42060 days (115.15 yr)  
   first obs. used      1904-10-03  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44318  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:08:49  

Additional Information
 Jupiter MOID = 1.58823 au 
 T_jup = 3.141 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.001887541506002E-15 -3.148084459049999E-15 4.182046161597702E-13 5.442737471859288E-15 7.547469086687055E-14 1.621442742577262E-15
q -3.148084459049999E-15 1.000884239433643E-14 -1.375191170156956E-12 -1.639813563517511E-14 -2.555154887273832E-13 -3.803484659461849E-15
tp 4.182046161597702E-13 -1.375191170156956E-12 6.261042610698718E-9 2.77860520968201E-11 9.939511937225561E-10 6.990543050656466E-12
node 5.442737471859288E-15 -1.639813563517511E-14 2.77860520968201E-11 3.058213372867701E-10 -2.964768635860767E-10 1.53921525478449E-11
peri 7.547469086687055E-14 -2.555154887273832E-13 9.939511937225561E-10 -2.964768635860767E-10 4.613444540495224E-10 -1.443784546824395E-11
i 1.621442742577262E-15 -3.803484659461849E-15 6.990543050656466E-12 1.53921525478449E-11 -1.443784546824395E-11 1.859981576765179E-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 8.84   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
diameter diameter 112.631 km 1.223 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.2 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Di Martino, M. (1984) Icarus 60, 541-546.]
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1990) Icarus 86, 402-447.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.041   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.686   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=13.94, mean=14.07, max.=14.21) deg.
U-B UB 0.343   0.058 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=13.94 deg.
Tholen spectral type spec_T CD   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B Cb   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)

545 Messalina (A904 TC)          Discovered 1904-Oct-03 by Gotz, P. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1905-Feb-03 23:03 00:02 Jupiter 1.9819678644765 1.98196716985689 1.98196855909701 3.5309675842721 3.40778568465131 2416880.460699500 1.64862549807575 95.7085598496504 16.5222979864327 -81.6311042695198 2377232.1436218 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:00 2019-Dec-03 20:09
1992-Jun-22 20:14 < 00:01 Jupiter 1.98565040187538 1.98564987443483 1.98565092931592 3.6169866830609 3.49706291269835 2448796.342930579 0.385702806260319 116.064089253217 24.6811934513964 -89.3346405294164 3452609.34436542 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:00 2019-Dec-03 20:09
2003-Jun-17 17:44 < 00:01 Jupiter 1.68505280785987 1.68505238206263 1.68505323367129 3.21140722407879 3.05086871149833 2452808.238599469 0.22947992343186 480.037070845097 12.5826851072444 -88.2154470801906 3106240.0516628 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:00 2019-Dec-03 20:09
2014-Jul-02 21:51 < 00:01 Jupiter 1.57248740001619 1.57248699712727 1.57248780290708 2.77101581886448 2.56928509483286 2456841.410320329 0.25572243077102 212.619621157899 9.32072197953532 -85.6606407019287 2785213.82043439 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:00 2019-Dec-03 20:09
2025-Jun-13 01:42 < 00:01 Jupiter 1.69148685053375 1.69148625017318 1.69148745089452 2.02510019365441 1.76054491800354 2460839.570930549 0.539859002007397 86.8177437229696 42.0584572257946 -72.6218080333873 2312888.01347786 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:00 2019-Dec-03 20:09
2036-Mar-03 15:04 < 00:01 Jupiter 1.93266104608241 1.9326603746898 1.93266171747481 2.45652744179043 2.27112132696494 2464756.127916156 0.823850610732411 41.1928835633311 11.4335577500873 -68.1990759633981 1676986.26917675 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:00 2019-Dec-03 20:09
2134-May-26 06:43 00:02 Jupiter 1.78845240448158 1.788451116925 1.78845369212294 3.31646747039024 3.17044849664997 2500632.779685732 1.78020857574107 790.138469246723 32.3270057662552 -86.2970328227837 2274629.96561791 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:00 2019-Dec-03 20:09
2145-Jun-08 11:16 00:02 Jupiter 1.5837066200736 1.58370605100135 1.58370718914755 3.05565083092919 2.87529668180119 2504663.969252239 1.84279915846488 442.259360341333 22.8863369616201 -89.7025922468896 2828837.00183765 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:00 2019-Dec-03 20:09
2156-Jun-20 07:24 00:02 Jupiter 1.61220327093918 1.61220240418568 1.61220413771091 2.62461056435863 2.41615742301705 2508693.808413867 2.30206439438335 319.947147199256 12.30114698358 -79.5458161960739 2710771.78308775 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:00 2019-Dec-03 20:09
2167-Apr-20 15:24 00:03 Jupiter 1.8456456384535 1.84564403022498 1.84564724668182 2.05923556722819 1.822797500555 2512650.141819050 3.23067934789273 81.6790545324283 51.2115202337258 50.2358143684782 2354036.6765821 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:00 2019-Dec-03 20:09

Alternate Designations
 A904 TC = 1949 YH = 1973 YO4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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