Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696453723696635 3.2963e-08  
a 3.202996242858148 1.4935e-08 au
q 2.659622752539844 1.0619e-07 au
i 11.20185569557348 4.3649e-06 deg
node 333.6160166365735 1.7348e-05 deg
peri 330.8662655074514 2.1537e-05 deg
M 117.2140873401545 1.3153e-05 deg
tp 2457918.773179541426
(2017-Jun-14.27317954)
7.7022e-05 TDB
period 2093.789756284793
5.73
1.4644e-05
4.009e-08
d
yr
n .1719370337539437 1.2025e-09 deg/d
Q 3.746369733176451 1.7468e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2647  
   data-arc span      42031 days (115.07 yr)  
   first obs. used      1904-10-03  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44566  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:54:25  

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 1.9819678636474 1.98196716803614 1.98196855925956 3.53096765071618 3.4077857534447 2416880.460691838 1.65662012467719 96.2821963318126 16.5992334422296 -81.7196728759289 2375349.23020538 T 44 CATAB v2.0f-lin.ifort 2019-Nov-07 01:54:39 2019-Nov-07 01:54
1992-Jun-22 20:14 < 00:01 Jupiter 1.98565040371839 1.98564987489167 1.98565093254498 3.61698669829864 3.49706292857185 2448796.342935950 0.385784441683722 116.082208650785 24.7546832061621 -89.3380229209392 3435175.12670039 T 44 CATAB v2.0f-lin.ifort 2019-Nov-07 01:54:39 2019-Nov-07 01:54
2003-Jun-17 17:44 < 00:01 Jupiter 1.68505280912074 1.68505238168856 1.68505323656719 3.2114071443998 3.05086862774988 2452808.238585091 0.229929884152893 480.900613507226 12.6136234235657 -88.2102584470806 3090100.67048436 T 44 CATAB v2.0f-lin.ifort 2019-Nov-07 01:54:39 2019-Nov-07 01:54
2014-Jul-02 21:51 < 00:01 Jupiter 1.57248739843002 1.57248699417698 1.57248780268502 2.77101577222257 2.56928504431733 2456841.410314915 0.258252272411903 212.732842602967 9.32092083150586 -85.6601066535491 2769645.74725556 T 44 CATAB v2.0f-lin.ifort 2019-Nov-07 01:54:39 2019-Nov-07 01:54
2025-Jun-13 01:42 < 00:01 Jupiter 1.69148684540278 1.69148624001636 1.69148745078939 2.02510010942658 1.76054482025607 2460839.570918604 0.545526994838485 87.2198030021767 42.3067369983597 -72.6274210805765 2309545.9839174 T 44 CATAB v2.0f-lin.ifort 2019-Nov-07 01:54:39 2019-Nov-07 01:54
2036-Mar-03 15:04 < 00:01 Jupiter 1.93266104048086 1.93266036263898 1.93266171832264 2.45652739809645 2.27112127914463 2464756.127920944 0.832355042370852 41.3797432775305 11.4873506472582 -68.2883798773169 1660459.26008178 T 44 CATAB v2.0f-lin.ifort 2019-Nov-07 01:54:39 2019-Nov-07 01:54
2134-May-26 06:43 00:02 Jupiter 1.78845241284706 1.78845111272092 1.78845371305971 3.31646747407544 3.17044850120362 2500632.779696811 1.7944312269139 795.925304130239 32.4410387872572 -86.2790856620801 2260056.25208917 T 44 CATAB v2.0f-lin.ifort 2019-Nov-07 01:54:39 2019-Nov-07 01:54
2145-Jun-08 11:16 00:02 Jupiter 1.58370662225054 1.5837060492134 1.58370719528948 3.05565083026938 2.87529668135569 2504663.969260328 1.85678492020877 443.341562629369 23.0310576502305 -89.7232913610331 2816728.24384017 T 44 CATAB v2.0f-lin.ifort 2019-Nov-07 01:54:39 2019-Nov-07 01:54
2156-Jun-20 07:24 00:02 Jupiter 1.61220326318492 1.61220238937756 1.61220413701069 2.62461065582131 2.41615752132479 2508693.808436614 2.31937885491448 322.049461851592 12.3323933142054 -79.5300203458795 2697523.52865111 T 44 CATAB v2.0f-lin.ifort 2019-Nov-07 01:54:39 2019-Nov-07 01:54
2167-Apr-20 15:24 00:03 Jupiter 1.84564562392165 1.84564400097713 1.84564724686608 2.05923555543562 1.82279748525045 2512650.141839264 3.25532314528252 82.3938231153891 51.500022432621 50.2760849210897 2342744.1560672 T 44 CATAB v2.0f-lin.ifort 2019-Nov-07 01:54:39 2019-Nov-07 01:54

Alternate Designations
 A904 TC = 1949 YH = 1973 YO4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin