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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696453724722945 3.2899e-08  
a 3.20299624266324 1.4767e-08 au
q 2.659622752049275 1.0585e-07 au
i 11.20185582418067 4.3273e-06 deg
node 333.6160170425824 1.7258e-05 deg
peri 330.8662652024151 2.1377e-05 deg
M 117.2140872946673 1.3089e-05 deg
tp 2457918.773179868210
(2017-Jun-14.27317987)
7.658e-05 TDB
period 2093.789756093678
5.73
1.448e-05
3.964e-08
d
yr
n .1719370337696376 1.1891e-09 deg/d
Q 3.746369733277205 1.7272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2696  
   data-arc span      42065 days (115.17 yr)  
   first obs. used      1904-10-03  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44199  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:44:49  

Additional Information
 Earth MOID = 1.65067 au 
 Jupiter MOID = 1.58823 au 
 T_jup = 3.141 
[ 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 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

[ 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
1905-Feb-03 23:03 00:02 Jupiter 1.98196786586886 1.9819671717284 1.98196856001022 3.53096777337109 3.4077858806738 2416880.460686777 1.64456007917862 95.4209031061227 16.4826864996322 -81.5849038451127 2378188.04815296 T 46 CATAB v2.0f-lin.ifort 2019-Dec-13 20:45:06 2019-Dec-13 20:45
1992-Jun-22 20:14 < 00:01 Jupiter 1.98565040191572 1.98564987517362 1.98565092865781 3.61698669858174 3.49706292875392 2448796.342931043 0.385662069341839 116.051873036139 24.6439773868606 -89.3322113893699 3461347.99155752 T 46 CATAB v2.0f-lin.ifort 2019-Dec-13 20:45:06 2019-Dec-13 20:45
2003-Jun-17 17:44 < 00:01 Jupiter 1.68505280867876 1.68505238369435 1.68505323367736 3.21140714519931 3.05086862854824 2452808.238580862 0.229251637622433 479.630068431833 12.5672051063402 -88.2180664028461 3114300.22018184 T 46 CATAB v2.0f-lin.ifort 2019-Dec-13 20:45:06 2019-Dec-13 20:45
2014-Jul-02 21:51 < 00:01 Jupiter 1.57248740141671 1.57248699922303 1.57248780361236 2.77101577186407 2.56928504432888 2456841.410312712 0.254434828370566 212.551405891778 9.32061027630307 -85.6609373004074 2792981.70816516 T 46 CATAB v2.0f-lin.ifort 2019-Dec-13 20:45:06 2019-Dec-13 20:45
2025-Jun-13 01:42 < 00:01 Jupiter 1.69148685182032 1.69148625402108 1.69148744961965 2.02510015372519 1.76054487229053 2460839.570924805 0.536955190410336 86.6117638058807 41.9309436487783 -72.6215792088055 2314425.65190572 T 46 CATAB v2.0f-lin.ifort 2019-Dec-13 20:45:06 2019-Dec-13 20:45
2036-Mar-03 15:04 < 00:01 Jupiter 1.9326610464647 1.932660378336 1.93266171459329 2.45652742248251 2.27112130611895 2464756.127918004 0.819499578996242 41.1025893489118 11.4057755985711 -68.1523331306719 1685612.58009229 T 46 CATAB v2.0f-lin.ifort 2019-Dec-13 20:45:06 2019-Dec-13 20:45
2134-May-26 06:43 00:02 Jupiter 1.78845240810041 1.78845112693643 1.78845368934827 3.31646750448834 3.17044853262076 2500632.779696093 1.77295623155231 787.226668561933 32.2697862037352 -86.3064903731516 2281917.64886431 T 46 CATAB v2.0f-lin.ifort 2019-Dec-13 20:45:06 2019-Dec-13 20:45
2145-Jun-08 11:16 00:02 Jupiter 1.58370662212304 1.58370605504589 1.58370718920181 3.05565083290972 2.87529668414666 2504663.969253239 1.83566675035916 441.717347670093 22.8131820025512 -89.6919334928098 2834936.35857021 T 46 CATAB v2.0f-lin.ifort 2019-Dec-13 20:45:06 2019-Dec-13 20:45
2156-Jun-20 07:24 00:02 Jupiter 1.61220327001555 1.61220240688664 1.61220413316262 2.62461065192282 2.41615751801123 2508693.808430745 2.2932297807097 318.872032059247 12.2845373430112 -79.5540889366235 2717282.58496481 T 46 CATAB v2.0f-lin.ifort 2019-Dec-13 20:45:06 2019-Dec-13 20:45
2167-Apr-20 15:24 00:03 Jupiter 1.84564563484584 1.84564403413285 1.84564723555862 2.05923555069617 1.82279748138645 2512650.141836159 3.2181044730714 81.3147426847709 51.0679098977935 50.2177841987578 2359740.14224999 T 46 CATAB v2.0f-lin.ifort 2019-Dec-13 20:45:06 2019-Dec-13 20:45

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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