Plans for the occultation of 9.4-mag. TYC 2416-00772-1 by (187) Lamberta on 2007 December 20 - New 2007 Dec. 21, 1h UT
The path for this good event crossed the USA from s. Virginia to s. California
Hot links for most of the Web sites mentioned below are here. Please help us measure the size and shape of (187) Lamberta by observing its occultation of 9.4-mag. TYC 2416-00772-1 tonight. The path is over s. Virginia (Richmond at n. limit, s. limit just s. of border with NC) to s. California, an expedition to s. Virginia is planned. See Steve Preston's Web page at http://www.asteroidoccultation.com/2007_12/1220_187_9318.htm for charts & details. The star is at J2000 RA 5h 36m 41.5s, Dec +37 deg. 23' 23" in Auriga. A central occultation will last 9s with a 3-mag. drop. Lamberta is estimated to be 130 km in diameter, so this "rank 99" event has good statistics (good probability for observers in the path actually having an occultation). For all 2007 "Preston" events worldwide, very detailed maps are on Derek Breit's Web site at http://www.poyntsource.com/New/Global.htm that links to the very detailed maps and satellite imagery of maps.google.com with overlays of the occultation paths and their 1-sigma uncertainty zones. Also on that Web site are station lists giving local circumstances, for many observer stations, now including all of the MPC observatories and other sites in an expanded list of stations. It gives the predicted time of the event, distance from the updated central line, probability that an occultation will occur there, and altitudes of the star and the Sun. If your station is not in that list, please let me and Derek, breit_ideas@hotmail.com , know so that you can be added to future lists. Also on this site are lists of stars, mostly brighter than the target star, that can be used before the event to pre-point stationary (non-tracking) telescopes. __________________ Station coverage & plans Please let me know your plans to observe this event, if you haven't already done so; we especially need to know from where fixed-site observers will be trying this good event. We want to optimize coverage of this event, so that the several mobile stations that we plan to deploy won't duplicate your observation, so your plans are important. This will probably be the last general e-mail about this event since I plan to leave home about 4:30 pm EST (21:30 UT); after that, call my cell phone or send a text message to my blackberry. In the list below, observers who are known to plan to try to observe this event, as well as several potential observers, are given from north to south in distance from Steve Preston's predicted central line. The probability of an occultation for the location is given, followed by the observer and/or location. For observers in our station database, the predicted time of the occultation is given for the location, as well as the altitudes of the target star and the Sun at the time of the occultation. Codes are given between the distance and probability columns indicating how committed observers plan to time the event, with * for a fixed-site visual observer, V for a fixed-site video or CCD observer, m for a mobile visual observer, M for a mobile visual observer, V for a mobile video observer, and ? indicating a location from which observations would be valuable, but from which no response has been received, so for now we can't count on an observation from there (but since an observation might be made, mobile observers should try to avoid an exact duplicate observation). For more stations, see Derek Breit's global Web site and scroll down to this event, and click on "sites". Occultation of TYC 2416-00772-1 by 187 Lamberta on 2007 Dec 20 Uncertainty in time = +/- 3 secs [Prediction of 2007 Dec 6.3] Distance (+ north of center, - south of center) from center, in Prob. U.T. Star km % Observer and/or location 5h + Alt m s o 97 16 ** Path limit plus 1-Sigma ** 94 ? 18 SEAL BEACH CA WERNER~DAVID PA 13 44 61 83 ? 29 Ashland VA - Keeble Obs 9 49 86 77 M 35 Hanover CH VA Shell gas D.Dunham 9 49 86 67 ? 48 Mchncsvl VA Ken Wilson 9 49 86 65 50 *** Path limit *** 64 ? 52 Richmond VA Randy Tatum vid. 9 50 86 44 * 74 Richmond VA John Raymond 9 50 86 36 ? 82 Palm Desert CA Levy~Lampert 13 36 62 36 * 82 Fincastl VA John Goss RVAS 10 4 87 35 ? 82 Prescott AZ Bob Thompson 13 13 65 31 ? 86 WhiteRck NM David Palmer 12 37 71 29 M 87 Hopewell VA I295/VA36 DD remote 9 48 86 23 * 90 Grundland AstroPk VA M.Klosterman 9 49 86 20 M 92 Parrott OK/KS from Occult Watcher 17 ? 93 Hampton VA - Dave Kratz 9 43 85 17 ? 93 Langley VA Hampton 16in pe 9 43 85 15 ? 94 SANTA FE NM MROZ~GENE 12 36 71 10 ? 95 SANTA FE NM TITUS~GREGORY B 12 36 71 6 ? 96 Roanoke VA Michael Good RVAS 10 4 87 3 M 96 Paul Maley mobile in Okla. 0 96 **** Centre Line **** -4 ? 96 Suffolk VA Tidewater CC Ob via 9 43 85 -10 * 95 CHESAPEK VI DENNIS A. ROWLEY 9 43 85 -11 * 95 Nealis in OK/KS -19 ? 92 Chesapeake VA Glendon Howell 9 42 85 -20 92 e. Fairland, OK R. Sandy remote-prob. not -25 M 90 Jarratt VA I95&Henry W.Warren 9 49 86 -29 ? 87 Enid, OK Adventure Ques 11 49 77 -30 ? 87 Enid, OK N.OK College C 11 49 77 -31 86 n. Emporia, VA D. Dunham remo 9 49 86 -32 ? 85 Success, OK R. Sandy remote? -34 83 Emporia VA w.I95 & n.US58 9 49 86 -35 ? 82 e.of Big Cabin R. Sandy remote? -40 M 79 Big Cabin OK - Bob Sandy Mobile 11 33 79 -43 ? 76 ALBUQUERQUE NM DULLECK~GEORGE 12 40 70 -45 73 Skippers VA e.I95 & Moores 9 49 86 -48 ? 70 Tijeras NM Bruce Levin 12 39 70 -50 * 69 n.e. NC Harry Abramson -60 ? 57 Tijeras, NM Becky Ramotows 12 39 70 -60 ? 56 Konnarock VA 10 13 87 -65 50 *** Path limit *** -73 M 40 Halifax, NC D.Dunham remote 9 50 86 -74 ? 38 STILLWATER OK LUCAS~ART 11 45 78 -77 ? 35 Tulsa OK Brad Young Home 11 38 78 -78 ? 34 Tierra delSolOb, SDAA Observato 13 37 62 -84 27 I95x160 NC Beaverdam 9 50 86 -87 V 24 W C Wallace from Occult Watcher -91 ? 21 Belen, NM TwiningObs.TAA 12 42 70 -92 ? 20 FOUNTAIN HILLSAZ LUCAS~GENE A. 13 11 66 -97 16 ** Path limit plus 1-Sigma ** -102 ? 12 SCOTTSDALE AZ PETERSON~RANDY 13 12 66 -109 ? 8 MESA AZ HERCHAK~JOHN Mobile 13 12 66 -115 ? 6 Gilbert AZ Martin Bonadio 13 12 66 -129 2 ** Path limit plus 2-Sigma ** -152 V 0 Mike Fulb. from Occult Watcher -160 0 ** Path limit plus 3-Sigma ** David Dunham, cell 301-526-5590 After 4:30 pm EST = 21:30 UT, don't use this e-mail address, but instead david.dunham@jhuapl.edu that I can receive by Blackberry ______________________________ A quick update to the stations, then I leave. ? stations removed from this list- call or text message me if you'll observe from one of them, and say so to the IOTAoccultations list if you're on it. Good luck! __________________ Station coverage & plans In the list below, observers who are known to plan to try to observe this event, as well as several potential observers, are given from north to south in distance from Steve Preston's predicted central line. The probability of an occultation for the location is given, followed by the observer and/or location. For observers in our station database, the predicted time of the occultation is given for the location, as well as the altitudes of the target star and the Sun at the time of the occultation. Codes are given between the distance and probability columns indicating how committed observers plan to time the event, with * for a fixed-site visual observer, V for a fixed-site video or CCD observer, m for a mobile visual observer, M for a mobile visual observer, V for a mobile video observer. For more stations, see Derek Breit's global Web site and scroll down to this event, and click on "sites". Mobile observers not in the list below should select a distance to avoid other observers in the list; you can call me for guidance. Occultation of TYC 2416-00772-1 by 187 Lamberta on 2007 Dec 20 Uncertainty in time = +/- 3 secs [Prediction of 2007 Dec 6.3] Distance (+ north of center, - south of center) from center, in Prob. U.T. Star km % Observer and/or location 5h + Alt m s o 97 16 ** Path limit plus 1-Sigma ** 77 M 35 Hanover CH VA Shell gas D.Dunham 9 49 86 65 50 *** Path Northern limit *** 44 * 74 Richmond VA John Raymond 9 50 86 36 * 82 Fincastl VA John Goss RVAS 10 4 87 29 M 87 Hopewell VA I295/VA36 DD remote 9 48 86 23 * 90 Grundland AstroPk VA M.Klosterman 9 49 86 20 M 92 Caney, KS Daniel Parrott 11 M 95 Salton Sea, CA Ernie Iverson 3 M 96 Paul Maley mobile in Okla. 0 96 **** Centre Line **** -11 * 95 Bartlesville, OK Gary Nealis -19 ? 92 Chesapeake VA Glendon Howell 9 42 85 -20 M 92 Owens, VA I95 Waye Warren -26 M 90 Ochelata, OK John Grismore -30 ? 87 n. of Albuquerque, NM possible mobile obs. -32 ? 85 Success, OK R. Sandy remote? -35 ? 82 e.of Big Cabin R. Sandy remote? -40 M 79 Big Cabin OK - Bob Sandy Mobile 11 33 79 -50 * 69 n.e. NC Harry Abramson -65 50 *** Path Southern limit *** -73 M 40 Halifax, NC D.Dunham remote 9 50 86 -87 V 24 W C Wallace from Occult Watcher -152 V 0 Mike Fulb. from Occult Watcher -160 0 ** Path limit plus 3-Sigma ** David Dunham, cell 301-526-5590 After 5:30 pm EST = 22:30 UT, don't use this e-mail address, but instead david.dunham@jhuapl.edu that I can receive by Blackberry - I'm leaving now!