I should add that a V filter was used for imaging, and the photometry of the three objects yielded the following mean V magnitudes and standard deviations in brightness for the objects on 2009 May 15.63 when they were at a range of 226,000 km from the observatory at Siding Spring, Australia: Herschel: 15.16 +/- 0.22 Planck: 16.54 +/- 0.55 SYLDA: 17.02 +/- 0.03 Absolute calibration was good to +/-0.03 mag. Cheers, Richard Miles, ----- Original Message ----- From: "Gerhard HOLTKAMP" <grd.holtkamp@t-online.de> To: <SeeSat-L@satobs.org> Cc: "Jonathan McDowell" <jcm@head.cfa.harvard.edu> Sent: Friday, May 15, 2009 5:15 PM Subject: Re: Herschel/Planck On Friday 15 May 2009 14:53, Jonathan McDowell wrote: > If anyone does make observations of Herschel/Planck: Arianespace > tells me they don't have detailed orbits for the four objects > but that in order of apogee from lowest to highest they are > Planck, Herschel, SYLDA and ESC-A. > > It's not clear what the fate of the last two will be, so it would > be great if anyone got measurements... > The ESA Optical Ground Station in Tenerife has taken a series of pictures showing these objects. See the article http://www.esa.int/esaSC/SEM4SJZVNUF_index_0.html I don't know whether anyone has bothered to process them astrometrically with regard to SYLDA and ESC-A. Gerhard HOLTKAMP Darmstadt, Germany ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Fri May 15 2009 - 18:37:36 UTC