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 ]  
18381 Massenet (1991 YU)
Classification: Main-belt Asteroid          SPK-ID: 2018381
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1435232031345844 3.089e-08  
a 2.799462549417205 1.3998e-08 au
q 2.397674717269538 8.7978e-08 au
i 6.637120068106099 4.2852e-06 deg
node 138.0731909909418 3.6722e-05 deg
peri 324.7618702236253 4.0982e-05 deg
M 22.84080772836438 1.7496e-05 deg
tp 2458891.952612088788
(2020-Feb-12.45261209)
8.3051e-05 TDB
period 1710.844034622709
4.68
1.2832e-05
3.513e-08
d
yr
n .2104224538967928 1.5782e-09 deg/d
Q 3.201250381564872 1.6007e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1787  
   data-arc span      10762 days (29.46 yr)  
   first obs. used      1990-08-16  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48513  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:25:00  

Additional Information
 Earth MOID = 1.41805 au 
 Jupiter MOID = 1.94016 au 
 T_jup = 3.301 
[ 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 13.2   n/a MPO416905  
diameter diameter 8.758 km 0.236 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.145   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

18381 Massenet           Discovered 1991 Dec. 30 by E. W. Elst at Haute Provence.
Jules Massenet (1842-1912) was a prolific French composer of operas. His greatest successes were Manon (1884), Werther (1892) and Thaïs (1894). The Méditation, a violin solo with orchestra from Thaïs, became world famous. In 1878 he was elected a member of the Académie des Beaux-Arts.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100726/MPCPages.arcLast Updated: 2010-07-28

[ 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
1962-Feb-04 06:34 00:01 Jupiter 1.95619275408349 1.95619236093532 1.95619314723187 2.91669659863105 2.76425906809198 2437699.773420544 1.17606557455946 86.9092219627936 11.2357802486703 86.0606659767886 2851736.61484794 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 22:25:12 2020-Feb-22 22:25
1985-Apr-18 21:20 < 00:01 Jupiter 1.95925987747534 1.9592595747519 1.95926018019867 2.69982245488549 2.53464121728399 2446174.388665646 0.665398657194186 61.8771527297822 10.4703864857768 89.2249302353721 3234363.54988686 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 22:25:12 2020-Feb-22 22:25
2140-Apr-03 01:52 00:03 Jupiter 1.95777778290945 1.95777723926523 1.95777832655668 2.98046740562183 2.83158899109843 2502771.577760855 2.52198256148176 169.351171114998 12.1256831334892 86.2840440750929 2789712.82078551 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 22:25:12 2020-Feb-22 22:25
2163-Jun-17 11:21 00:03 Jupiter 1.94520987034073 1.94520953815117 1.94521020253084 2.76150151730353 2.59904026342619 2511246.973003011 3.01538176946968 178.502094977746 13.0409291951671 -85.78593858657 2969517.80466974 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 22:25:12 2020-Feb-22 22:25
2186-Aug-29 01:24 00:04 Jupiter 1.97728273036649 1.97728183102825 1.97728362970766 2.6425478592023 2.47513739330342 2519720.558055310 3.59578359644575 146.266319836427 20.6452904555504 -73.2586239650608 3609391.43131698 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 22:25:12 2020-Feb-22 22:25

Alternate Designations
 1991 YU = 1990 QB11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-24 12:13 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin