A positive leap second was introduced in UTC on 31 Decembre 2008
No detectable Chilequake effect!Latest C04 values for polar motion and UT1 given on 2010 3 16 at 0h UTC : x= -51.89 mas y= 285.47 mas UT1-UTC= 35.033 ms
Polar motion over recent year :
Excess of the Length of day for the previous years :
Atmospheric excitation over the current yearDirector : Dr. Daniel Gambis
IERS EOP PC
Observatoire de Paris
61, avenue de l'Observatoire
75014 Paris/ FRANCE
phone: 00 33 (0)1 40 51 22 29
fax : 00 33 (0)1 40 51 22 91
Staff
Dr. Daniel Gambis, Astronomer: Director of the EOP PC Dr. Christian
Bizouard, Astronomer : WEB master, EOP analysis, combination
algorithm Olivier Becker,
Technician, WEB service, C04 solution, operational service
Jean-Yves Richard, Engineer:
Multitechnique Combination "GINS Dynamo"
Dr. Sébastien Lambert, Astronomer, numerical analysis Teddy Carlucci,
EngineerComputer manager Dr. Gérard
Francou, Astronomer Combined EOP series, Bulletin B, C, D Secretary : Pascale
Baudoin, Administration of EOP-PC Participant :
Prof. Mireille
Bougeard, Mathematician Numerical methodOur graphics or plots are designed thanks to php package JPGRAPH
Location : Observatoire de Paris, SYRTE
Missions of the EOP Product Centre of International Earth Rotation Service and Reference Systems :
- Collect through the world the time series of the Earth Orientation Parameters (EOP):
- polar motion (x,y)
- universal time (UT1-UTC, UT1-TAI)
- Celestial pole offsets (Dpsi, Deps)
- Archive EOP and make them avaible through FTP/WEB
- Analyse EOP and in particular monitor their consistencies
with respect to the international terrestrial and celestial referene
frames.
- Compute a combined standard solution for EOP (Bulletin
B)
in the (IERS) C04 solution.
- Compute and make available DUT1 (Bulletin D) and leap second announcements (Bulletin C).
- astrometry
- geophysics
- space geodesy
- orbit determination
- timing
- positionning