Event between 99CY118 and star UC4-490-057430 with event index number of 53634
Geocentric closest approach at 2016/05/26 06:52:36 UTC
J2000 position of star is 13:28:51.8 +07:48:56
Equinox of date position of star is 13:29:41.1 +07:43:52
Stellar brightness R=15.1
Star is 97 degrees from the moon.
Moon is 82% illuminated.
TNO apparent brightness V=24.3
[RECON map]
TNO is 35.7 AU from the Sun
and 35.1 AU from the Earth.
The TNO is moving 14.6
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 309 seconds.
The 1-sigma cross-track error in the shadow position is
2190 km.
The sky-plane scale is
25443.5 km/arcsec.
The TNO has an absolute magnitude Hv=8.7
Diameter=111.7 km assuming a 5% albedo -- 7.6 sec chord
Diameter=45.6 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is SCATNEAR
Star training set for 99CY118, (2016/05/26 06:53UT) Object RA Dec mag sep mel Arcturus 14:16:24.6 +19:05:51 0.0 16.06 89 Vindemiatrix 13:02:59.6 +10:52:17 2.8 7.29 104 PPM 159803 13:30:49.5 +07:05:40 6.2 0.70 97 PPM 159775 13:28:58.2 +08:16:25 8.4 0.57 97 PPM 159773 13:28:56.0 +07:33:53 10.0 0.25 97 PPM 159791 13:30:02.6 +07:41:12 10.3 0.10 97 99CY118 13:29:41.1 +07:43:52 15.1 97 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
2.9 sigma about the mid-time.
The median site spacing is 19.9 km
RECON observability=1.0 and success probability=13.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 06:51:14 | -18.4 | Dark | Down | 43.7 | 216.0 | Up | 06:36:14 - 07:06:14 | -1366 |
| Tonasket | 06:51:13 | -18.7 | Dark | Up | 43.8 | 216.1 | Up | 06:36:13 - 07:06:13 | -1384 |
| Okanogan | 06:51:13 | -19.0 | Dark | Up | 44.2 | 216.1 | Up | 06:36:13 - 07:06:13 | -1412 |
| Brewster | 06:51:13 | -19.2 | Dark | Up | 44.5 | 216.0 | Up | 06:36:13 - 07:06:13 | -1436 |
| Manson/Chelan | 06:51:14 | -19.3 | Dark | Down | 44.8 | 215.7 | Up | 06:36:14 - 07:06:14 | -1457 |
| Entiat | 06:51:14 | -19.5 | Dark | Up | 45.0 | 215.7 | Up | 06:36:14 - 07:06:14 | -1475 |
| Wenatchee | 06:51:13 | -19.7 | Dark | Up | 45.2 | 215.8 | Up | 06:36:13 - 07:06:13 | -1497 |
| Ellensburg | 06:51:13 | -20.1 | Dark | Up | 45.7 | 215.7 | Up | 06:36:13 - 07:06:13 | -1532 |
| Yakima | 06:51:12 | -20.5 | Dark | Up | 46.0 | 215.9 | Up | 06:36:12 - 07:06:12 | -1565 |
| Pasco | 06:51:04 | -21.1 | Dark | Up | 45.7 | 218.0 | Up | 06:36:04 - 07:06:04 | -1573 |
| Toppenish/White Swan | 06:51:10 | -20.7 | Dark | Up | 46.1 | 216.3 | Up | 06:36:10 - 07:06:10 | -1580 |
| PNWRO | 06:51:03 | -21.4 | Dark | Up | 45.8 | 218.4 | Up | 06:36:03 - 07:06:03 | -1589 |
| George/Umatilla | 06:51:04 | -21.4 | Dark | Up | 46.0 | 217.9 | Up | 06:36:04 - 07:06:04 | -1603 |
| Goldendale | 06:51:11 | -21.2 | Dark | Up | 46.7 | 216.1 | Up | 06:36:11 - 07:06:11 | -1631 |
| The Dalles | 06:51:11 | -21.3 | Dark | Up | 47.1 | 215.7 | Up | 06:36:11 - 07:06:11 | -1655 |
| Maupin | 06:51:10 | -21.7 | Dark | Up | 47.4 | 216.1 | Up | 06:36:10 - 07:06:10 | -1687 |
| Madras/Culver | 06:51:08 | -22.2 | Dark | Up | 47.8 | 216.4 | Up | 06:36:08 - 07:06:08 | -1733 |
| Redmond | 06:51:07 | -22.6 | Dark | Up | 48.1 | 216.6 | Up | 06:36:07 - 07:06:07 | -1763 |
| Sisters | 06:51:09 | -22.4 | Dark | Up | 48.3 | 216.0 | Up | 06:36:09 - 07:06:09 | -1767 |
| Bend | 06:51:07 | -22.7 | Dark | Up | 48.4 | 216.5 | Up | 06:36:07 - 07:06:07 | -1783 |
| Oregon Observatory | 06:51:08 | -22.9 | Dark | Up | 48.6 | 216.5 | Up | 06:36:08 - 07:06:08 | -1799 |
| La Pine/Gilchrist | 06:51:08 | -23.0 | Dark | Up | 48.7 | 216.5 | Up | 06:36:08 - 07:06:08 | -1817 |
| North Lake | 06:51:03 | -23.6 | Dark | Up | 48.8 | 217.6 | Up | 06:36:03 - 07:06:03 | -1845 |
| Niwot | 06:49:40 | -28.7 | Dark | Up | 42.4 | 238.2 | Up | 06:34:40 - 07:04:40 | -1871 |
| Paisley | 06:51:00 | -24.2 | Dark | Up | 49.1 | 218.5 | Up | 06:36:00 - 07:06:00 | -1887 |
| Chiloquin | 06:51:06 | -24.0 | Dark | Up | 49.8 | 216.8 | Up | 06:36:06 - 07:06:06 | -1917 |
| Lakeview | 06:50:58 | -24.7 | Dark | Up | 49.4 | 219.1 | Up | 06:35:58 - 07:05:58 | -1928 |
| Klamath Falls | 06:51:05 | -24.4 | Dark | Up | 50.0 | 217.2 | Up | 06:36:05 - 07:06:05 | -1945 |
| Tulelake | 06:51:02 | -24.7 | Dark | Up | 50.1 | 217.7 | Up | 06:36:02 - 07:06:02 | -1964 |
| Cedarville | 06:50:55 | -25.4 | Dark | Up | 49.9 | 219.8 | Up | 06:35:55 - 07:05:55 | -1982 |
| Fall River/Burney | 06:51:00 | -25.6 | Dark | Up | 50.8 | 218.5 | Up | 06:36:00 - 07:06:00 | -2042 |
| Susanville | 06:50:54 | -26.3 | Dark | Up | 50.9 | 220.0 | Up | 06:35:54 - 07:05:54 | -2086 |
| Greenville | 06:50:54 | -26.5 | Dark | Up | 51.3 | 219.8 | Up | 06:35:54 - 07:05:54 | -2115 |
| Quincy | 06:50:54 | -26.7 | Dark | Up | 51.5 | 220.0 | Up | 06:35:54 - 07:05:54 | -2133 |
| Portola | 06:50:51 | -26.9 | Dark | Up | 51.3 | 220.7 | Up | 06:35:51 - 07:05:51 | -2136 |
| Reno | 06:50:48 | -27.3 | Dark | Up | 51.2 | 221.8 | Up | 06:35:48 - 07:05:48 | -2150 |
| Carson City | 06:50:46 | -27.7 | Dark | Up | 51.5 | 222.1 | Up | 06:35:46 - 07:05:46 | -2182 |
| Yerington | 06:50:42 | -28.0 | Dark | Up | 51.3 | 223.1 | Up | 06:35:42 - 07:05:42 | -2189 |
| Gardnerville | 06:50:45 | -27.9 | Dark | Up | 51.6 | 222.4 | Up | 06:35:45 - 07:05:45 | -2203 |
| Hawthorne | 06:50:39 | -28.6 | Dark | Up | 51.3 | 224.2 | Up | 06:35:39 - 07:05:39 | -2223 |
| Tonopah | 06:50:30 | -29.3 | Dark | Up | 50.9 | 226.4 | Up | 06:35:30 - 07:05:30 | -2242 |
| Lee Vining | 06:50:40 | -29.0 | Dark | Up | 52.0 | 224.1 | Up | 06:35:40 - 07:05:40 | -2281 |
| Bishop | 06:50:34 | -29.7 | Dark | Up | 52.0 | 225.5 | Up | 06:35:34 - 07:05:34 | -2324 |
| Beatty | 06:50:24 | -30.5 | Dark | Up | 51.4 | 228.0 | Up | 06:35:24 - 07:05:24 | -2340 |
| Indian Springs | 06:50:17 | -31.0 | Dark | Up | 51.0 | 229.7 | Up | 06:35:17 - 07:05:17 | -2352 |
| Lone Pine | 06:50:30 | -30.5 | Dark | Up | 52.4 | 226.7 | Up | 06:35:30 - 07:05:30 | -2388 |
| Henderson | 06:50:12 | -31.7 | Dark | Up | 50.9 | 231.0 | Up | 06:35:12 - 07:05:12 | -2390 |
| Patrick | 06:50:05 | -32.5 | Dark | Up | 50.6 | 232.9 | Up | 06:35:05 - 07:05:05 | -2429 |
| Searchlight/Boulder City | 06:50:10 | -32.3 | Dark | Up | 51.3 | 231.6 | Up | 06:35:10 - 07:05:10 | -2441 |
| DCO | 06:50:00 | -32.9 | Dark | Up | 50.3 | 234.0 | Up | 06:35:00 - 07:05:00 | -2445 |
| Kingman/Dolan Springs | 06:50:05 | -32.7 | Dark | Up | 50.9 | 232.9 | Up | 06:35:05 - 07:05:05 | -2452 |
| Laughlin/Bullhead City | 06:50:08 | -32.6 | Dark | Up | 51.2 | 232.3 | Up | 06:35:08 - 07:05:08 | -2463 |
| Mohave Valley | 06:50:07 | -32.9 | Dark | Up | 51.4 | 232.6 | Up | 06:35:07 - 07:05:07 | -2488 |
| Lake Havasu City | 06:50:04 | -33.3 | Dark | Up | 51.5 | 233.3 | Up | 06:35:04 - 07:05:04 | -2521 |
| CPSLO | 06:50:40 | -31.2 | Dark | Up | 54.8 | 224.5 | Up | 06:35:40 - 07:05:40 | -2550 |
| Parker | 06:50:03 | -33.7 | Dark | Up | 51.7 | 233.7 | Up | 06:35:03 - 07:05:03 | -2553 |
| Blythe | 06:50:03 | -34.1 | Dark | Up | 52.2 | 233.8 | Up | 06:35:03 - 07:05:03 | -2608 |
| Wildwood | 06:50:27 | -32.8 | Dark | Up | 54.4 | 228.4 | Up | 06:35:27 - 07:05:27 | -2629 |
| Idyllwild | 06:50:15 | -33.6 | Dark | Up | 53.5 | 231.2 | Up | 06:35:15 - 07:05:15 | -2631 |
| Calipatria | 06:50:07 | -34.4 | Dark | Up | 53.1 | 233.3 | Up | 06:35:07 - 07:05:07 | -2670 |
| Yuma | 06:50:00 | -35.0 | Dark | Up | 52.7 | 234.8 | Up | 06:35:00 - 07:05:00 | -2695 |
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 99CY118, (2016/05/26 06:53UT) Object RA Dec mag sep mel Arcturus 14:15:38.4 +19:10:24 0.0 16.06 89 Vindemiatrix 13:02:10.3 +10:57:33 2.8 7.29 104 PPM 159803 13:30:00.1 +07:10:44 6.2 0.70 97 PPM 159775 13:28:09.0 +08:21:30 8.4 0.57 97 PPM 159773 13:28:06.7 +07:38:58 10.0 0.25 97 PPM 159791 13:29:13.3 +07:46:16 10.3 0.10 97 99CY118 13:28:51.8 +07:48:56 15.1 97 Positions are for J2000
Event circumstances last updated at 2016/05/25 22:34:01 UT
Marc W. Buie, Southwest Research Institute