Hi All, Apologies for this off-topic post, but I wanted to congratulate one of our regular Seesat-L contributors, Rick Baldridge, for observing this earth-crossing Aten asteroid discovered by LINEAR, and posting updated position information. Those with good-sized telescopes should be able to see this asteroid within the next week. --Rob > >>> MINOR PLANET ASTRO-ALERT: 2000 EW70 > >>> > >>> On March 9, 2000, the 1-meter f/2.15 LINEAR patrol camera in New > Mexico > >>> picked up a fast-moving asteroid that could threaten Earth at some > future > >>> date. The Minor Planet Center in Cambridge, Massachusetts, has given > it > >>> the temporary designation 2000 EW70. About magnitude 17.5 when first > >>> detected, the asteroid will brighten 20-fold next week as it makes a > >>> moderately close flyby, passing only 0.013 astronomical unit from > Earth. > >>> (That's 5 Earth-Moon distances.) > >>> > >>> Small CCD-equipped telescopes can capture trailed images of 2000 EW70 > >>> during this period. Any telescope that shows Pluto visually -- say, > >>> 0.25-meter (10-inch) aperture or larger -- should show this object > >gliding > >>> from Leo into Ursa Major during March 22-25. On those nights, its > >>> unusually rapid motion (about 1 degree per hour!) should be > perceptible > >in > >>> a high-power eyepiece. > >>> > >>The information is largely adapted from Minor Planet Electronic Circular > >>2000-E57, published by the Minor Planet Center in Cambridge, > Massachusetts > >>(http://cfa-www.harvard.edu/iau/mpc.html). This asteroid belongs to the > >Aten > >>family and circles the Sun in less than 11 months. It orbit, inclined > 5.5 > >>degrees to the ecliptic, takes it just inside Venus's orbit at > perihelion > >>and well beyond Earth's orbit at aphelion. > >> > >>______________________________________________________________ > >>Information below added to original S&T message by Rick Baldridge of the > >>Peninsula Astronomical Society, showing asteroid's position for LICK > >>OBSERVATORY and therefore giving better positional information corrected > >for > >>parallax, which could be greater than 10 arcminutes as the asteroid > passes > >>closest on March 24th at 2am PST. (Print ephemeris in a fixed-pitch > font > >>like Courier or Courier-New for proper spacing of columns.) Updates > will > >be > >>forwarded if ephemeris changes significantly. > >> > >>> The following ephemeris, calculated from the Minor Planet Ephemeris > >>> Service Website at: > >>http://cfa-www.harvard.edu/iau/MPEph/MPEph.html and gives the > object's > >>right ascension and declination at 6-hour intervals for the next few > days, > >>then 2-hour intervals during the March 22-25 flyby period FOR LICK > >>OBSERVATORY, CA. Also listed is its distance from the Earth (Delta) and > >the > >>Sun (r) in a.u., elongation from the Sun in degrees, phase angle, > expected > >>visual magnitude, motion in seconds of arc per minute of time, altitude > and > >>azimuth of the asteroid and altitude of the Sun. > >> > >> > >>___________________________________________________________________ > >> > >>2000 EW70 > >> > >>Epoch 2000 Feb. 26.0 TT = JDT 2451600.5 Williams > >>M 245.48360 (2000.0) P Q > >>n 1.08780296 Peri. 125.47043 +0.55769935 +0.83003886 > >>a 0.9363450 Node 178.41934 -0.78911578 +0.53118140 > >>e 0.3211142 Incl. 5.47533 -0.25742519 +0.16994649 > >>P 0.91 H 21.4 G 0.15 > >>>From 65 observations 2000 Mar. 9-13. > >> > >> > >>Last observed on 2000 Mar. 13. Elements from MPEC 2000-E59. > >> > >>Further observations? PHA : Desirable between 2000 Mar. 16-22. > >> > >> K00E70W > >>Date TT R.A. (J2000) Decl. Delta r El. Ph. V > >>Motion Object Sun > >> > >>"/min P.A. Azi. Alt. Alt. > >>2000 03 15 00 12 27 45 -08 38 36 0.057 1.049 164.1 15.1 16.1 > >>3.23 343.6 246 -41 +25 > >>2000 03 15 06 12 27 13 -08 19 30 0.055 1.048 164.6 14.6 16.0 > >>3.72 331.7 307 +28 -43 > >>2000 03 15 12 12 26 26 -07 59 00 0.054 1.047 165.2 14.0 15.9 > >>4.03 332.3 053 +28 -28 > >>2000 03 15 18 12 25 50 -07 36 54 0.052 1.045 165.8 13.5 15.9 > >>3.94 343.3 115 -40 +40 > >>2000 03 16 00 12 25 24 -07 14 00 0.051 1.044 166.4 13.0 15.8 > >>4.06 342.8 246 -39 +25 > >>2000 03 16 06 12 24 44 -06 50 06 0.049 1.043 167.0 12.4 15.7 > >>4.65 332.2 308 +30 -43 > >>2000 03 16 12 12 23 47 -06 24 18 0.048 1.042 167.7 11.7 15.6 > >>5.02 332.9 055 +28 -27 > >>2000 03 16 18 12 23 01 -05 56 36 0.047 1.041 168.4 11.1 15.5 > >>4.96 342.7 118 -40 +40 > >>2000 03 17 00 12 22 27 -05 27 36 0.045 1.039 169.0 10.5 15.4 > >>5.20 342.0 246 -36 +25 > >>2000 03 17 06 12 21 35 -04 57 00 0.044 1.038 169.8 9.8 15.3 > >>5.94 332.7 308 +33 -42 > >>2000 03 17 12 12 20 25 -04 24 00 0.042 1.037 170.6 9.1 15.2 > >>6.40 333.5 058 +29 -27 > >>2000 03 17 18 12 19 27 -03 48 30 0.041 1.036 171.3 8.3 15.1 > >>6.42 342.1 122 -40 +41 > >>2000 03 18 00 12 18 40 -03 10 48 0.040 1.035 172.1 7.6 15.0 > >>6.83 341.3 245 -33 +26 > >>2000 03 18 06 12 17 32 -02 30 30 0.038 1.033 172.9 6.8 14.9 > >>7.80 333.3 308 +36 -42 > >>2000 03 18 12 12 16 02 -01 47 00 0.037 1.032 173.8 6.0 14.8 > >>8.39 334.0 062 +29 -27 > >>2000 03 18 18 12 14 45 -01 00 06 0.036 1.031 174.6 5.2 14.6 > >>8.55 341.5 126 -39 +41 > >>2000 03 19 00 12 13 40 -00 09 36 0.034 1.030 175.3 4.5 14.5 > >>9.27 340.7 245 -30 +26 > >>2000 03 19 06 12 12 07 +00 45 06 0.033 1.028 176.0 3.9 14.4 > >>10.58 333.8 308 +40 -42 > >>2000 03 19 12 12 10 08 +01 44 24 0.031 1.027 176.4 3.5 14.3 > >>11.38 334.5 067 +30 -26 > >>2000 03 19 18 12 08 23 +02 48 36 0.030 1.026 176.3 3.6 14.2 > >>11.81 340.9 132 -38 +41 > >>2000 03 20 00 12 06 48 +03 58 48 0.029 1.025 175.7 4.2 14.1 > >>13.06 340.0 243 -25 +26 > >>2000 03 20 06 12 04 36 +05 16 00 0.028 1.023 174.6 5.2 14.1 > >>14.94 334.2 307 +45 -42 > >>2000 03 20 12 12 01 49 +06 40 06 0.026 1.022 173.3 6.6 14.0 > >>16.11 334.8 074 +31 -26 > >>2000 03 20 18 11 59 17 +08 11 36 0.025 1.021 171.6 8.2 14.0 > >>17.06 340.1 139 -35 +42 > >>2000 03 21 00 11 56 49 +09 53 36 0.024 1.020 169.7 10.0 14.0 > >>19.24 339.2 242 -18 +26 > >>2000 03 21 06 11 53 28 +11 47 24 0.023 1.018 167.6 12.1 13.9 > >>22.07 334.3 304 +52 -41 > >>2000 03 21 12 11 49 18 +13 51 36 0.022 1.017 165.2 14.5 13.9 > >>23.85 334.7 083 +32 -26 > >>2000 03 21 18 11 45 17 +16 07 36 0.020 1.016 162.6 17.1 13.9 > >>25.73 338.8 148 -30 +42 > >> > >> > >>EVERY TWO HOURS NEAR CLOSEST APPROACH > >>Date TT R.A. (J2000) Decl. Delta r El. Ph. V > >>Motion Object Sun > >> > >>"/min P.A. Azi. Alt. Alt. > >>2000 03 22 00 11 41 07 +18 41 24 0.019 1.015 159.7 19.9 13.9 > >>29.54 337.8 239 -09 +26 > >>2000 03 22 02 11 39 27 +19 37 12 0.019 1.014 158.6 21.0 13.9 > >>31.05 336.2 256 +14 +3 > >>2000 03 22 04 11 37 35 +20 35 00 0.019 1.014 157.5 22.1 13.8 > >>32.50 334.7 273 +39 -20 > >>2000 03 22 06 11 35 30 +21 34 42 0.018 1.013 156.4 23.2 13.8 > >>33.78 333.5 298 +63 -41 > >>2000 03 22 08 11 33 16 +22 35 48 0.018 1.013 155.2 24.4 13.8 > >>34.81 332.8 018 +75 -52 > >>2000 03 22 10 11 30 55 +23 38 24 0.018 1.012 154.0 25.6 13.8 > >>35.61 332.7 076 +57 -45 > >>2000 03 22 12 11 28 32 +24 42 30 0.017 1.012 152.7 26.8 13.8 > >>36.31 333.3 098 +33 -25 > >>2000 03 22 14 11 26 09 +25 48 18 0.017 1.012 151.4 28.1 13.8 > >>37.09 334.3 115 +10 -2 > >>2000 03 22 16 11 23 46 +26 56 18 0.017 1.011 150.1 29.4 13.8 > >>38.11 335.3 135 -09 +22 > >>2000 03 22 18 11 21 22 +28 07 00 0.017 1.011 148.8 30.7 13.8 > >>39.48 336.0 160 -22 +43 > >>2000 03 22 20 11 18 53 +29 20 42 0.016 1.010 147.4 32.1 13.8 > >>41.23 336.1 189 -23 +54 > >>2000 03 22 22 11 16 14 +30 37 48 0.016 1.010 145.9 33.6 13.8 > >>43.25 335.6 215 -13 +46 > >>2000 03 23 00 11 13 19 +31 58 12 0.016 1.009 144.4 35.1 13.8 > >>45.38 334.4 234 +06 +27 > >>2000 03 23 02 11 10 03 +33 21 18 0.015 1.009 142.8 36.7 13.8 > >>47.44 332.8 248 +28 +3 > >>2000 03 23 04 11 06 24 +34 46 42 0.015 1.009 141.1 38.4 13.9 > >>49.22 331.2 259 +52 -20 > >>2000 03 23 06 11 02 22 +36 13 36 0.015 1.008 139.4 40.1 13.9 > >>50.58 329.8 269 +77 -41 > >>2000 03 23 08 10 58 00 +37 41 24 0.015 1.008 137.6 41.8 13.9 > >>51.49 328.7 097 +78 -52 > >>2000 03 23 10 10 53 23 +39 09 36 0.015 1.007 135.8 43.6 13.9 > >>52.07 328.2 108 +54 -44 > >>2000 03 23 12 10 48 34 +40 38 24 0.014 1.007 134.0 45.4 13.9 > >>52.53 328.1 120 +32 -25 > >>2000 03 23 14 10 43 38 +42 08 12 0.014 1.006 132.2 47.2 14.0 > >>53.15 328.3 134 +12 -2 > >>2000 03 23 16 10 38 31 +43 39 36 0.014 1.006 130.4 49.0 14.0 > >>54.14 328.6 152 -01 +22 > >>2000 03 23 18 10 33 11 +45 13 06 0.014 1.006 128.5 50.9 14.0 > >>55.60 328.4 174 -07 +43 > >>2000 03 23 20 10 27 27 +46 49 00 0.014 1.005 126.5 52.8 14.0 > >>57.43 327.7 196 -04 +54 > >>2000 03 23 22 10 21 10 +48 27 06 0.014 1.005 124.5 54.8 14.1 > >>59.40 326.3 213 +08 +47 > >>2000 03 24 00 10 14 09 +50 06 24 0.014 1.004 122.5 56.9 14.1 > >>61.23 324.3 225 +26 +27 > >>2000 03 24 02 10 06 17 +51 45 24 0.013 1.004 120.3 59.0 14.2 > >>62.60 321.8 231 +45 +3 > >>2000 03 24 04 09 57 28 +53 22 36 0.013 1.003 118.2 61.1 14.2 > >>63.29 319.1 222 +64 -20 > >>2000 03 24 06 09 47 46 +54 56 18 0.013 1.003 116.0 63.3 14.3 > >>63.23 316.4 174 +72 -41 > >>2000 03 24 08 09 37 16 +56 25 24 0.013 1.003 113.9 65.4 14.3 > >>62.52 313.8 140 +59 -51 > >>2000 03 24 10 09 26 04 +57 49 30 0.013 1.002 111.7 67.6 14.4 > >>61.44 311.7 138 +42 -44 > >>2000 03 24 12 09 14 18 +59 09 00 0.013 1.002 109.6 69.6 14.5 > >>60.34 309.8 146 +26 -25 > >>2000 03 24 14 09 01 58 +60 24 18 0.013 1.001 107.6 71.7 14.5 > >>59.54 308.2 159 +14 -2 > >>2000 03 24 16 08 48 58 +61 36 12 0.013 1.001 105.6 73.7 14.6 > >>59.25 306.3 175 +09 +22 > >>2000 03 24 18 08 35 08 +62 44 42 0.013 1.000 103.5 75.7 14.7 > >>59.44 304.1 190 +11 +43 > >>2000 03 24 20 08 20 13 +63 49 00 0.014 1.000 101.5 77.8 14.8 > >>59.89 301.0 203 +20 +55 > >>2000 03 24 22 08 04 04 +64 47 30 0.014 1.000 99.4 79.8 14.9 > >>60.29 297.1 211 +33 +47 > >>2000 03 25 00 07 46 39 +65 38 12 0.014 0.999 97.3 81.9 14.9 > >>60.30 292.5 210 +47 +27 > >>2000 03 25 02 07 28 09 +66 19 00 0.014 0.999 95.3 83.9 15.0 > >>59.67 287.3 196 +58 +4 > >>2000 03 25 04 07 08 59 +66 48 42 0.014 0.998 93.2 86.0 15.1 > >>58.31 281.9 169 +59 -20 > >>2000 03 25 06 06 49 41 +67 07 06 0.014 0.998 91.3 87.9 15.2 > >>56.31 276.6 153 +49 -40 > > > ---------- > Archives located at: > http://www.meteoritecentral.com/list_best.html > > For help, FAQ's and sub. info. visit: > http://www.meteoritecentral.com/mailing_list.html > ---------- > ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Fri Mar 17 2000 - 11:37:08 PST