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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 60 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .170008793535812 2.0659e-08  
a 3.201722604062034 1.0496e-08 au
q 2.657401606909109 6.9629e-08 au
i 11.20623448744307 1.2224e-06 deg
node 333.5994555105533 4.0626e-06 deg
peri 331.0862764180757 7.1087e-06 deg
M 253.8310441791666 7.1405e-06 deg
tp 2460013.619152841799
(2023-Mar-10.11915284)
4.2557e-05 TDB
period 2092.541019221864
5.73
1.029e-05
2.817e-08
d
yr
n .1720396382642335 8.4601e-10 deg/d
Q 3.746043601214959 1.2281e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3610  
   data-arc span      42650 days (116.77 yr)  
   first obs. used      1904-10-03  
   last obs. used      2021-07-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39361  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:45:02  

Additional Information
 Earth MOID = 1.64862 au 
 Jupiter MOID = 1.59077 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 23:04 00:01 Jupiter 1.98196785350346 1.98196734455956 1.98196836244792 3.53096595941455 3.40778400105816 2416880.460996811 1.43253496659523 63.5929312689197 6.20021418878965 -80.5041355195498 4752384.90351685 T 60 CATAB v2.0g-lin.ifort 2021-Aug-25 06:46:10 2021-Aug-25 06:46
1992-Jun-22 20:14 < 00:01 Jupiter 1.98565034490913 1.98565005269355 1.98565063712493 3.61698684944916 3.49706308196689 2448796.342886586 0.351270799455489 51.0073581682893 10.390968345854 -79.6523817858486 9096072.05816285 T 60 CATAB v2.0g-lin.ifort 2021-Aug-25 06:46:10 2021-Aug-25 06:46
2003-Jun-17 17:44 < 00:01 Jupiter 1.68505277258333 1.68505258503914 1.68505296012896 3.21140774681365 3.05086925920071 2452808.238551541 0.18243140359236 142.640894433581 5.68762395776397 -87.757615504673 8199921.3843229 T 60 CATAB v2.0g-lin.ifort 2021-Aug-25 06:46:10 2021-Aug-25 06:46
2014-Jul-02 21:51 < 00:01 Jupiter 1.57248744831881 1.57248725345824 1.57248764317939 2.77101654318071 2.56928588361776 2456841.410269190 0.104669088306474 49.4243530382289 6.57235294811677 -86.339781154137 7395780.99973253 T 60 CATAB v2.0g-lin.ifort 2021-Aug-25 06:46:10 2021-Aug-25 06:46
2025-Jun-13 01:42 < 00:01 Jupiter 1.69148700830213 1.69148681599035 1.69148720061391 2.02510085560002 1.76054570751985 2460839.570862089 0.279775593632821 46.6324737234489 13.5226390239624 -77.5320060042599 7215798.32572732 T 60 CATAB v2.0g-lin.ifort 2021-Aug-25 06:46:10 2021-Aug-25 06:46
2036-Mar-03 15:04 < 00:01 Jupiter 1.93266124132237 1.93266099243989 1.93266149020486 2.45652822904519 2.27112219904883 2464756.127842801 0.528027493440883 16.254945242338 5.3479349284707 -85.9239762311339 4290175.85961482 T 60 CATAB v2.0g-lin.ifort 2021-Aug-25 06:46:10 2021-Aug-25 06:46
2134-May-26 06:43 00:01 Jupiter 1.78845246053558 1.78845152046677 1.78845340064974 3.31646801278105 3.17044906952843 2500632.779757631 1.39296877546261 479.082231394633 10.4392665200729 -84.8614547717365 6996254.45053211 T 60 CATAB v2.0g-lin.ifort 2021-Aug-25 06:46:10 2021-Aug-25 06:46
2145-Jun-08 11:16 00:01 Jupiter 1.58370667758044 1.58370625278032 1.58370710238379 3.05565161784828 2.87529752586199 2504663.969338302 1.45061821325235 209.17947336313 14.3902930505682 87.8283346897669 5406717.23423972 T 60 CATAB v2.0g-lin.ifort 2021-Aug-25 06:46:10 2021-Aug-25 06:46
2156-Jun-20 07:24 00:02 Jupiter 1.61220332827039 1.61220279519443 1.61220386135772 2.62461159365885 2.4161585500535 2508693.808532027 1.80089237473534 241.196602905925 7.62760927739503 -80.480063671935 8217291.61089059 T 60 CATAB v2.0g-lin.ifort 2021-Aug-25 06:46:10 2021-Aug-25 06:46
2167-Apr-20 15:24 00:03 Jupiter 1.84564571114133 1.84564458296377 1.8456468393189 2.05923619161416 1.8227982172376 2512650.141953003 2.54009096854419 56.9165455467152 21.1667812963544 31.3016807037606 7240456.79642704 T 60 CATAB v2.0g-lin.ifort 2021-Aug-25 06:46:10 2021-Aug-25 06:46

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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