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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1698581179756868 3.2535e-08  
a 3.202759860755463 1.3688e-08 au
q 2.658745098479467 1.0387e-07 au
i 11.20435173930231 4.105e-06 deg
node 333.6004747685728 1.6378e-05 deg
peri 330.9537803896464 2.0055e-05 deg
M 185.8836596434082 1.265e-05 deg
tp 2460013.062925812599
(2023-Mar-09.56292581)
7.4304e-05 TDB
period 2093.557977074351
5.73
1.3421e-05
3.674e-08
d
yr
n .1719560690184865 1.1024e-09 deg/d
Q 3.746774623031459 1.6013e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2981  
   data-arc span      42211 days (115.57 yr)  
   first obs. used      1904-10-03  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42112  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:07:47  

Additional Information
 Earth MOID = 1.65056 au 
 Jupiter MOID = 1.5906 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 8.8   n/a MPO502158 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-August); 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 1.98196801600919 1.98196733018537 1.9819687018339 3.5309683392458 3.40778647650335 2416880.460741417 1.56177384564397 89.8229349444473 15.5571153839402 -80.4998240925144 2400673.75171001 T 49 CATAB v2.0f-lin.ifort 2020-May-20 01:08:03 2020-May-20 01:08
1992-Jun-22 20:14 < 00:01 Jupiter 1.9856502554444 1.98564974334862 1.98565076754019 3.61698696802543 3.49706319843972 2448796.342889597 0.384822209373877 115.195378561285 23.8327849745998 -89.1742056661571 3641112.63227834 T 49 CATAB v2.0f-lin.ifort 2020-May-20 01:08:03 2020-May-20 01:08
2003-Jun-17 17:44 < 00:01 Jupiter 1.68505274659455 1.6850523375608 1.68505315564143 3.21140772982756 3.05086923786945 2452808.238551641 0.224437502133553 472.984511245497 12.2391671632355 -88.2712729079592 3275568.9450584 T 49 CATAB v2.0f-lin.ifort 2020-May-20 01:08:03 2020-May-20 01:08
2014-Jul-02 21:51 < 00:01 Jupiter 1.57248750812227 1.57248712073126 1.57248789551498 2.77101630905863 2.56928563792836 2456841.410263585 0.227601925776563 209.537486256144 9.3168061995185 -85.6622355779637 2950706.99213774 T 49 CATAB v2.0f-lin.ifort 2020-May-20 01:08:03 2020-May-20 01:08
2025-Jun-13 01:42 < 00:01 Jupiter 1.69148713776349 1.69148659381349 1.69148768171349 2.02510037614657 1.76054517621779 2460839.570810398 0.475457719754352 81.6856607688638 39.2327200979359 -73.035397614905 2335485.16827384 T 49 CATAB v2.0f-lin.ifort 2020-May-20 01:08:03 2020-May-20 01:08
2036-Mar-03 15:04 < 00:01 Jupiter 1.93266134953997 1.93266074817187 1.93266195090796 2.45652913586897 2.27112318964167 2464756.127733997 0.727135213637444 39.5639321554223 10.7793183667879 -67.0581973912542 1899739.41869837 T 49 CATAB v2.0f-lin.ifort 2020-May-20 01:08:03 2020-May-20 01:08
2134-May-26 06:42 00:02 Jupiter 1.7884521462595 1.7884509980482 1.78845329453697 3.3164678950748 3.17044891932575 2500632.779462889 1.62258270403217 728.993750196446 31.0631697537081 -86.5380361337481 2431908.73409564 T 49 CATAB v2.0f-lin.ifort 2020-May-20 01:08:03 2020-May-20 01:08
2145-Jun-08 11:15 00:02 Jupiter 1.58370660440004 1.58370607766062 1.58370713113999 3.05565127783931 2.87529715490302 2504663.969042043 1.68811797578116 431.541570093225 21.2661732074973 -89.4686420901394 2962902.76106755 T 49 CATAB v2.0f-lin.ifort 2020-May-20 01:08:03 2020-May-20 01:08
2156-Jun-20 07:24 00:02 Jupiter 1.61220356843227 1.61220278185594 1.61220435502364 2.62461078290102 2.41615770053835 2508693.808169925 2.11064096270566 296.282418486527 11.8689024101574 -79.7409917882057 2837439.14281591 T 49 CATAB v2.0f-lin.ifort 2020-May-20 01:08:03 2020-May-20 01:08
2167-Apr-20 15:24 00:03 Jupiter 1.84564611175609 1.84564466797162 1.84564755554035 2.05923623773465 1.82279832259912 2512650.141435411 2.95812485164052 73.791855624309 48.1425355702569 50.0912991280294 2480929.81413647 T 49 CATAB v2.0f-lin.ifort 2020-May-20 01:08:03 2020-May-20 01:08

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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