Event between (523624) 08CT190 and star UC4-643-049446 with event index number of 325996
Geocentric closest approach at 2020/01/23 12:40:17 UTC
J2000 position of star is 12:02:53.7 +38:29:22
Equinox of date position of star is 12:03:53.1 +38:22:53
Stellar brightness R=15.6,
use SENSEUP=128
Star is 118 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=21.4
[RECON map]
TNO is 35.1 AU from the Sun
and 34.4 AU from the Earth.
The TNO is moving 21.9
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 92 seconds.
The 1-sigma cross-track error in the shadow position is
2619 km.
The sky-plane scale is
24971.1 km/arcsec.
The TNO has an absolute magnitude Hv=5.8
Diameter=416.9 km assuming a 5% albedo -- 19.0 sec chord
Diameter=170.2 km assuming a 30% albedo -- 7.8 sec chord
Dynamical classification is 7:3EEEE
Star training set for 523624, (2020/01/23 12:40UT) Object RA Dec mag sep mel Arcturus 14:16:34.7 +19:04:45 0.0 34.60 84 Phad 11:54:52.6 +53:34:59 2.4 15.28 120 PPM 076134 11:54:07.6 +37:34:32 6.4 2.09 119 PPM 076307 12:10:28.5 +38:31:11 7.3 1.29 116 PPM 076265 12:06:25.0 +38:32:43 8.9 0.52 117 PPM 076218 12:02:22.4 +38:13:52 11.5 0.34 118 523624 12:03:55.0 +38:22:40 15.6 117 Positions are for equinox of date
This table contains the target star visibility for the RECON
network. The observing range has been set to a maximum of
5.0 sigma about the mid-time.
The median site spacing is 5.6 km
RECON observability=1.0 and success probability=1.2%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Niwot | 12:39:51 | -18.5 | Dark | Down | 69.6 | 274.0 | Up | 12:31:41 - 12:48:01 | 9102 |
SwRI | 12:39:51 | -18.5 | Dark | Down | 69.6 | 274.2 | Up | 12:31:41 - 12:48:01 | 9092 |
DCO | 12:39:31 | -24.0 | Dark | Down | 75.0 | 288.4 | Up | 12:31:21 - 12:47:41 | 8330 |
Patrick | 12:39:35 | -24.6 | Dark | Down | 75.6 | 287.6 | Up | 12:31:25 - 12:47:45 | 8278 |
Kelowna | 12:40:52 | -28.9 | Dark | Down | 75.6 | 222.5 | Up | 12:32:42 - 12:49:02 | 8261 |
Kingman/Dolan Springs | 12:39:31 | -24.8 | Dark | Down | 75.7 | 288.5 | Up | 12:31:21 - 12:47:41 | 8255 |
Penticton | 12:40:48 | -29.1 | Dark | Down | 75.9 | 223.0 | Up | 12:32:38 - 12:48:58 | 8239 |
Anarchist Mountain Observatory | 12:40:46 | -29.0 | Dark | Down | 76.2 | 225.0 | Up | 12:32:36 - 12:48:56 | 8237 |
Summerland | 12:40:49 | -29.1 | Dark | Down | 75.9 | 222.5 | Up | 12:32:39 - 12:48:59 | 8233 |
Okanagan Falls | 12:40:48 | -29.1 | Dark | Down | 76.1 | 223.5 | Up | 12:32:38 - 12:48:58 | 8232 |
Oroville | 12:40:46 | -29.0 | Dark | Down | 76.3 | 225.0 | Up | 12:32:36 - 12:48:56 | 8229 |
Oliver | 12:40:47 | -29.1 | Dark | Down | 76.2 | 224.0 | Up | 12:32:37 - 12:48:57 | 8228 |
Tonasket | 12:40:44 | -29.0 | Dark | Down | 76.5 | 225.7 | Up | 12:32:34 - 12:48:54 | 8223 |
Lake Havasu City | 12:39:30 | -24.9 | Dark | Down | 75.7 | 291.2 | Up | 12:31:20 - 12:47:40 | 8212 |
Laughlin/Bullhead City | 12:39:33 | -25.2 | Dark | Down | 76.1 | 288.8 | Up | 12:31:23 - 12:47:43 | 8210 |
Parker | 12:39:29 | -24.8 | Dark | Down | 75.5 | 292.4 | Up | 12:31:19 - 12:47:39 | 8205 |
Okanogan | 12:40:43 | -29.2 | Dark | Down | 76.8 | 226.2 | Up | 12:32:33 - 12:48:53 | 8203 |
Mohave Valley | 12:39:32 | -25.1 | Dark | Down | 76.0 | 289.8 | Up | 12:31:22 - 12:47:42 | 8203 |
Henderson | 12:39:38 | -25.6 | Dark | Down | 76.6 | 285.5 | Up | 12:31:28 - 12:47:48 | 8200 |
Searchlight/Boulder City | 12:39:35 | -25.5 | Dark | Down | 76.4 | 287.8 | Up | 12:31:25 - 12:47:45 | 8189 |
PNWRO | 12:40:31 | -28.8 | Dark | Down | 77.9 | 236.1 | Up | 12:32:21 - 12:48:41 | 8182 |
Brewster | 12:40:42 | -29.3 | Dark | Down | 77.1 | 226.5 | Up | 12:32:32 - 12:48:52 | 8180 |
Pasco | 12:40:32 | -29.0 | Dark | Down | 77.9 | 234.6 | Up | 12:32:22 - 12:48:42 | 8173 |
Blythe | 12:39:26 | -25.0 | Dark | Down | 75.5 | 294.5 | Up | 12:31:16 - 12:47:36 | 8163 |
Indian Springs | 12:39:42 | -26.2 | Dark | Down | 77.3 | 283.5 | Up | 12:31:32 - 12:47:52 | 8157 |
Manson/Chelan | 12:40:41 | -29.6 | Dark | Down | 77.4 | 226.2 | Up | 12:32:31 - 12:48:51 | 8148 |
George/Umatilla | 12:40:31 | -29.1 | Dark | Down | 78.2 | 235.3 | Up | 12:32:21 - 12:48:41 | 8147 |
Entiat | 12:40:40 | -29.6 | Dark | Down | 77.6 | 226.7 | Up | 12:32:30 - 12:48:50 | 8136 |
Yuma | 12:39:21 | -24.9 | Dark | Down | 75.2 | 297.7 | Up | 12:31:11 - 12:47:31 | 8132 |
Wenatchee | 12:40:39 | -29.7 | Dark | Down | 77.8 | 227.2 | Up | 12:32:29 - 12:48:49 | 8121 |
Ellensburg | 12:40:37 | -29.9 | Dark | Down | 78.2 | 228.0 | Up | 12:32:27 - 12:48:47 | 8093 |
Toppenish/White Swan | 12:40:34 | -29.8 | Dark | Down | 78.5 | 230.7 | Up | 12:32:24 - 12:48:44 | 8084 |
Yakima | 12:40:36 | -29.9 | Dark | Down | 78.5 | 229.4 | Up | 12:32:26 - 12:48:46 | 8079 |
Beatty | 12:39:43 | -27.1 | Dark | Down | 78.2 | 282.2 | Up | 12:31:33 - 12:47:53 | 8076 |
Tonopah | 12:39:50 | -27.5 | Dark | Down | 78.7 | 276.6 | Up | 12:31:40 - 12:48:00 | 8073 |
Calipatria | 12:39:25 | -25.7 | Dark | Down | 76.0 | 297.1 | Up | 12:31:15 - 12:47:35 | 8066 |
Goldendale | 12:40:32 | -30.2 | Dark | Down | 79.1 | 231.6 | Up | 12:32:22 - 12:48:42 | 8036 |
The Dalles | 12:40:32 | -30.4 | Dark | Down | 79.4 | 231.4 | Up | 12:32:22 - 12:48:42 | 8002 |
Maupin | 12:40:29 | -30.4 | Dark | Down | 79.6 | 233.5 | Up | 12:32:19 - 12:48:39 | 7996 |
Idyllwild | 12:39:29 | -26.8 | Dark | Down | 77.2 | 296.0 | Up | 12:31:19 - 12:47:39 | 7981 |
Madras/Culver | 12:40:27 | -30.4 | Dark | Down | 80.0 | 235.8 | Up | 12:32:17 - 12:48:37 | 7975 |
Hawthorne | 12:39:54 | -28.6 | Dark | Down | 79.9 | 273.8 | Up | 12:31:44 - 12:48:04 | 7971 |
Redmond | 12:40:25 | -30.5 | Dark | Down | 80.2 | 237.4 | Up | 12:32:15 - 12:48:35 | 7959 |
Lone Pine | 12:39:44 | -28.1 | Dark | Down | 79.2 | 284.1 | Up | 12:31:34 - 12:47:54 | 7957 |
Paisley | 12:40:17 | -30.1 | Dark | Down | 80.6 | 247.3 | Up | 12:32:07 - 12:48:27 | 7955 |
Bishop | 12:39:48 | -28.4 | Dark | Down | 79.6 | 280.2 | Up | 12:31:38 - 12:47:58 | 7953 |
Lakeview | 12:40:14 | -30.0 | Dark | Down | 80.6 | 250.5 | Up | 12:32:04 - 12:48:24 | 7953 |
North Lake | 12:40:20 | -30.3 | Dark | Down | 80.6 | 243.4 | Up | 12:32:10 - 12:48:30 | 7945 |
Cedarville | 12:40:11 | -29.8 | Dark | Down | 80.7 | 254.7 | Up | 12:32:01 - 12:48:21 | 7945 |
Yerington | 12:39:56 | -29.1 | Dark | Down | 80.3 | 270.9 | Up | 12:31:46 - 12:48:06 | 7943 |
Bend | 12:40:24 | -30.6 | Dark | Down | 80.4 | 238.0 | Up | 12:32:14 - 12:48:34 | 7941 |
Sisters | 12:40:25 | -30.8 | Dark | Down | 80.4 | 236.1 | Up | 12:32:15 - 12:48:35 | 7929 |
Oregon Observatory | 12:40:24 | -30.7 | Dark | Down | 80.6 | 238.5 | Up | 12:32:14 - 12:48:34 | 7925 |
La Pine/Gilchrist | 12:40:23 | -30.8 | Dark | Down | 80.7 | 239.4 | Up | 12:32:13 - 12:48:33 | 7914 |
Lee Vining | 12:39:52 | -29.0 | Dark | Down | 80.2 | 276.9 | Up | 12:31:42 - 12:48:02 | 7912 |
Reno | 12:40:01 | -29.6 | Dark | Down | 80.8 | 267.2 | Up | 12:31:51 - 12:48:11 | 7908 |
Carson City | 12:39:59 | -29.5 | Dark | Down | 80.8 | 269.4 | Up | 12:31:49 - 12:48:09 | 7897 |
Gardnerville | 12:39:57 | -29.5 | Dark | Down | 80.8 | 270.9 | Up | 12:31:47 - 12:48:07 | 7893 |
Susanville | 12:40:06 | -30.2 | Dark | Down | 81.3 | 260.7 | Up | 12:31:56 - 12:48:16 | 7870 |
Portola | 12:40:03 | -30.1 | Dark | Down | 81.3 | 264.9 | Up | 12:31:53 - 12:48:13 | 7864 |
Tulelake | 12:40:14 | -30.8 | Dark | Down | 81.5 | 249.3 | Up | 12:32:04 - 12:48:24 | 7857 |
Chiloquin | 12:40:17 | -31.1 | Dark | Down | 81.5 | 244.6 | Up | 12:32:07 - 12:48:27 | 7848 |
Gimple | 12:40:04 | -30.4 | Dark | Down | 81.5 | 262.2 | Up | 12:31:54 - 12:48:14 | 7843 |
Klamath Falls | 12:40:15 | -31.0 | Dark | Down | 81.6 | 246.9 | Up | 12:32:05 - 12:48:25 | 7843 |
Greenville | 12:40:04 | -30.4 | Dark | Down | 81.6 | 262.1 | Up | 12:31:54 - 12:48:14 | 7837 |
Fall River/Burney | 12:40:10 | -30.8 | Dark | Down | 81.7 | 255.3 | Up | 12:32:00 - 12:48:20 | 7832 |
Quincy | 12:40:04 | -30.4 | Dark | Down | 81.6 | 263.5 | Up | 12:31:54 - 12:48:14 | 7830 |
Wildwood | 12:39:33 | -28.4 | Dark | Down | 78.7 | 296.7 | Up | 12:31:23 - 12:47:43 | 7828 |
CPSLO | 12:39:41 | -30.1 | Dark | Down | 80.8 | 293.3 | Up | 12:31:31 - 12:47:51 | 7691 |
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 523624, (2020/01/23 12:40UT) Object RA Dec mag sep mel Arcturus 14:15:38.2 +19:10:18 0.0 34.60 84 Phad 11:53:50.0 +53:41:41 2.4 15.28 120 PPM 076134 11:53:05.3 +37:41:14 6.4 2.09 119 PPM 076307 12:09:27.7 +38:37:53 7.3 1.29 116 PPM 076265 12:05:23.8 +38:39:25 8.9 0.52 117 PPM 076218 12:01:20.9 +38:20:34 11.5 0.34 118 523624 12:02:53.7 +38:29:22 15.6 118 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:12:10 UT
Marc W. Buie, Southwest Research Institute