YK Chia <chiayk@singnet.com.sg> asks > Can anyone out there tell me how to report re-entry phenomena and >how to get help to identifywhich object is involved. Keep in mind that the vast majority of bright fireballs are meteors and not re-entries. Some organisations collect observations of such events; for example, here in the UK the British Astronomical Association requests that observers submit their reports to Howard Miles, Lane Park, Pityme, St Minver, Wadebridge, Cornwall PL27 6PN. There are probably other centres worldwide - can other SeeSaters provide addresses? If you post your observation(s) here on SeeSat, I (and others, I assume) would be happy to help in identifying any potential re-entry. The sort of information we'd like is: o Your location (latitude and longitude and/or name of town etc); o Date and time of observation (specify the time zone and provide a UTC time if you can make the conversion); o As much info about location and track in the sky as possible! Altitude (degrees) and direction when first and last seen. How long in seconds was the event visible? If seen at night, are you able to describe the track with respect to the stars and constellations? How did the angular speed compare with meteors and satellites you have seen? o Appearance, eg single luminous object, or several in train? Colour? Brightness? o Were any sounds heard? When, relative to the time of the visible object. > What about TLE for decayed satellite on the day of predicted >reentry? NASA's Orbital Information Group (OIG) publish the latest elsets for all unclassified (non-secret) objects. For objects close to decay, I compile these into my dklist.tle file which is updated several times daily and is available via my WWW page below. However, you can query OIG yourself for the final published elsets for recent decayers. Log in and register with OIG at http://oigsysop.atsc.allied.com/scripts/foxweb.dll/app01? One of the pages they offer is "Satellite Catalog Action Report". select this and under "Data type" check "Header and TLE". This page will include the final elsets for recently decayed elsets. Since these may be hours before the actual re-entry, you may wish to use my SatEvo program to project the elset forwards in time, closer to the re-entry. Be warned, though, that a good idea of the actual decay time usually requires an analysis based on several elsets over the final day or two. Alan -- Alan Pickup | COSPAR site 2707: 55d53m48.7s N 3d11m51.2s W 156m asl Edinburgh | Home: alan@wingar.demon.co.uk +44 (0)131 477 9144 Scotland | SatEvo satellite page: http://www.wingar.demon.co.uk/satevo/