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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 54 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1699396877271284 3.2124e-08  
a 3.202372009610684 1.2832e-08 au
q 2.658161910311348 1.0304e-07 au
i 11.20559240521415 4.0933e-06 deg
node 333.5988423604063 1.5603e-05 deg
peri 331.0135658945534 1.9276e-05 deg
M 220.2017630926307 1.263e-05 deg
tp 2460013.340420960753
(2023-Mar-09.84042096)
7.414e-05 TDB
period 2093.177696795729
5.73
1.2581e-05
3.444e-08
d
yr
n .1719873093197458 1.0338e-09 deg/d
Q 3.746582108910021 1.5013e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3239  
   data-arc span      42478 days (116.30 yr)  
   first obs. used      1904-10-03  
   last obs. used      2021-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40683  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:47:33  

Additional Information
 Earth MOID = 1.64799 au 
 Jupiter MOID = 1.59075 au 
 T_jup = 3.142 
[ 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 8.81   n/a E2021B10 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. 2020-October); 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 1.98196802112288 1.98196734016842 1.98196870207813 3.53096869918565 3.40778684977758 2416880.460699556 1.51762867982665 87.5490055585672 15.2174845374499 -80.1252780960705 2416450.87283012 T 54 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:42 2021-Feb-24 00:47
1992-Jun-22 20:14 < 00:01 Jupiter 1.98565024784908 1.9856497377518 1.98565075794636 3.61698698718873 3.49706321779359 2448796.342876754 0.382626498967971 111.873774049303 23.6488388290258 -88.8467300999753 3659519.5043571 T 54 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:42 2021-Feb-24 00:47
2003-Jun-17 17:44 < 00:01 Jupiter 1.68505275019811 1.68505234285839 1.68505315755066 3.21140773526071 3.05086924394085 2452808.238555619 0.223321344655111 467.65188535655 12.1284704927279 -88.2507230502756 3294932.23017082 T 54 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:42 2021-Feb-24 00:47
2014-Jul-02 21:51 < 00:01 Jupiter 1.57248751663001 1.57248714098221 1.57248789227925 2.77101632115941 2.56928565211353 2456841.410281735 0.215764743282187 201.522221932108 9.03267402590934 -85.6876856240266 2982781.8308423 T 54 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:42 2021-Feb-24 00:47
2025-Jun-13 01:42 < 00:01 Jupiter 1.69148713676504 1.69148661811516 1.69148765541492 2.02510025067504 1.7605450317239 2460839.570821474 0.439603018651617 79.2982891657767 36.9634813094081 -73.2262674115338 2357013.09754792 T 54 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:42 2021-Feb-24 00:47
2036-Mar-03 15:04 < 00:01 Jupiter 1.9326613316575 1.93266075027452 1.93266191304047 2.45652906166604 2.27112310759555 2464756.127749867 0.681373046939398 39.3958817838485 10.2394064848427 -66.829027652972 2029853.34422456 T 54 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:42 2021-Feb-24 00:47
2134-May-26 06:43 00:02 Jupiter 1.7884521886361 1.78845108280136 1.78845329453266 3.31646800156857 3.17044903426376 2500632.779523942 1.54971489179261 712.205372193103 30.1748430010205 -86.6125778641144 2453494.57977819 T 54 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:42 2021-Feb-24 00:47
2145-Jun-08 11:16 00:02 Jupiter 1.58370662369078 1.58370610227804 1.58370714510388 3.05565136853203 2.87529725355023 2504663.969108005 1.61259328049262 414.108145896461 20.9791982128039 -89.3911388356189 2990300.17201356 T 54 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:42 2021-Feb-24 00:47
2156-Jun-20 07:24 00:02 Jupiter 1.61220354880769 1.61220281670992 1.61220428091883 2.62461077037093 2.41615768428037 2508693.808226061 2.01220255939202 282.930701138354 11.2786937002346 -79.9249053842645 2862854.61832567 T 54 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:42 2021-Feb-24 00:47
2167-Apr-20 15:24 00:03 Jupiter 1.84564606043717 1.84564469341977 1.84564742745436 2.05923606629184 1.82279812191757 2512650.141527046 2.82081981627694 69.9388341536458 47.7277206492492 50.1905300213221 2575870.40287382 T 54 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:42 2021-Feb-24 00:47

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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