------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2710 2011 Feb 04 16.25UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074 INTERNET: GUY@TAHQ.DEMON.CO.UK Backup: gmh@wdcc1.bnsc.rl.ac.uk WORLD WIDE WEB http://www.theastronomer.org ------------------------------------------------------------------- 2011 CQ1 Ernesto Guido & Giovanni Sostero, Italy e-mail that this newly discovered object, officially designated 2011 CQ1, will make a close Earth approach today 2011 February 04 around 19:40UT at ~0.03(LD)/0.00008(AU) or 11855 km. 2011 CQ1 has been discovered by R. A. Kowalski few hours ago in the course of the Catalina Sky Survey with a 0.68-m Schmidt + CCD. The object was moving at roughly 6 "/min and it was of magnitude ~19. According to its absolute magnitude H=32 this is a very small object, in the order of 4-5 metres. Just a few hours after his discovery, we have been able to follow-up this object using remotely a 0.35-m f/3.8 reflector + CCD of "Tzec Maun Observatory" in New Mexico. At the moment of our images (on February 04.46), "2011 CQ1" was moving at 23"/min and its magnitude was ~18. Editor: we are indebted to Ernesto and Giovanni for the alert and link to their website to be found at: http://bit.ly/ev0vZY where their image can also be seen. M.P.E.C. 2011-C12 provides the orbital elements: Epoch 2011 Jan. 19.0 TT = JDT 2455580.5 MPC M 305.62281 (2000.0) P Q n 0.81553609 Peri. 59.01393 -0.96862440 +0.24815976 a 1.1345943 Node 135.35074 -0.23408997 -0.89268336 e 0.2013026 Incl. 1.10453 -0.08347855 -0.37620893 P 1.21 H 32.0 G 0.15 From 11 observations 2011 Feb. 4. E-assumed. Ephemeris: Date TT R. A. (2000) Decl. Delta r Elong. V 2011 02 04.00 08 20.73 +14 37.5 0.00268 0.988 168.4 19.8 2011 02 04.70 09 10.81 +18 55.6 0.00052 0.986 177.3 15.8 2011 02 04.71 09 14.77 +19 13.5 0.00049 0.986 176.9 15.7 2011 02 04.72 09 19.26 +19 33.3 0.00046 0.986 176.2 15.7 2011 02 04.73 09 24.38 +19 55.2 0.00043 0.986 175.2 15.6 2011 02 04.74 09 30.27 +20 19.7 0.00040 0.986 173.9 15.5 2011 02 04.75 09 37.11 +20 47.1 0.00038 0.986 172.4 15.4 2011 02 04.76 09 45.13 +21 17.7 0.00035 0.986 170.6 15.3 2011 02 04.77 09 54.66 +21 51.9 0.00032 0.986 168.4 15.2 2011 02 04.78 10 06.09 +22 30.0 0.00029 0.986 165.7 15.1 2011 02 04.79 10 20.01 +23 11.7 0.00026 0.986 162.5 15.0 2011 02 04.80 10 37.15 +23 56.4 0.00024 0.986 158.5 14.9 2011 02 04.81 10 58.53 +24 41.4 0.00021 0.986 153.6 14.8 2011 02 04.82 11 25.39 +25 21.4 0.00019 0.986 147.6 14.8 2011 02 04.83 11 59.04 +25 45.2 0.00017 0.986 140.0 14.7 2011 02 04.84 12 40.37 +25 34.6 0.00016 0.986 130.7 14.8 2011 02 04.85 13 28.70 +24 26.9 0.00015 0.986 119.7 15.0 2011 02 04.86 14 20.89 +22 06.2 0.00014 0.986 107.5 15.3 2011 02 04.87 15 11.90 +18 41.9 0.00014 0.986 95.1 15.7 2011 02 04.88 15 57.31 +14 47.4 0.00015 0.986 83.6 16.3 2011 02 04.89 16 35.14 +10 58.7 0.00017 0.986 73.7 17.0 2011 02 04.90 17 05.60 +07 37.1 0.00018 0.986 65.5 17.8 2011 02 04.91 17 29.84 +04 48.2 0.00021 0.986 58.8 18.5 2011 02 04.92 17 49.18 +02 29.9 0.00023 0.986 53.5 19.2 2011 02 04.93 18 04.77 +00 37.3 0.00025 0.986 49.2 19.8 Guy M Hurst