Event between (33340) 98VG44 and star GA1100:02607000 with event index number of 352194
Geocentric closest approach at 2019/01/28 08:53:39 UTC
J2000 position of star is 07:02:18.5 +21:26:54
Equinox of date position of star is 07:03:26.3 +21:25:11
Stellar brightness G=15.0,
use SENSEUP=128
Star is 120 degrees from the moon.
Moon is 45% illuminated.
TNO apparent brightness V=21.2
[RECON map]
TNO is 29.5 AU from the Sun
and 28.6 AU from the Earth.
The TNO is moving 21.7
km/sec on the sky relative to the star, or,
3.8 arcsec/hr.
The 1-sigma error in the time of the event is 282 seconds.
The 1-sigma cross-track error in the shadow position is
1117 km.
The sky-plane scale is
20744.5 km/arcsec.
The TNO has an absolute magnitude Hv=6.5
Diameter=302.0 km assuming a 5% albedo -- 13.9 sec chord
Diameter=123.3 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is 3:2E
Star training set for 33340, (2019/01/28 08:54UT) Object RA Dec mag sep mel Pollux 07:46:28.8 +27:58:43 1.1 11.76 110 Alhena 06:38:48.8 +16:22:53 1.9 7.70 125 44 Gem 07:06:27.2 +22:36:26 5.9 1.38 119 PPM 096947 07:04:18.8 +21:08:44 8.5 0.34 119 PPM 096937 07:03:53.1 +21:43:17 10.1 0.32 119 33340 07:03:26.8 +21:25:10 15.0 119 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
3.2 sigma about the mid-time.
The median site spacing is 20.0 km
RECON observability=1.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 08:52:10 | -57.2 | Dark | Down | 50.2 | 237.4 | Up | 08:37:10 - 09:07:10 | 7038 |
| Summerland | 08:52:11 | -57.4 | Dark | Down | 50.4 | 237.0 | Up | 08:37:11 - 09:07:11 | 7026 |
| Penticton | 08:52:10 | -57.6 | Dark | Down | 50.5 | 237.6 | Up | 08:37:10 - 09:07:10 | 7003 |
| Okanagan Falls | 08:52:09 | -57.8 | Dark | Down | 50.6 | 237.8 | Up | 08:37:09 - 09:07:09 | 6987 |
| Oliver | 08:52:09 | -58.0 | Dark | Down | 50.7 | 237.9 | Up | 08:37:09 - 09:07:09 | 6973 |
| Anarchist Mountain Observatory | 08:52:07 | -58.1 | Dark | Down | 50.7 | 238.3 | Up | 08:37:07 - 09:07:07 | 6963 |
| Oroville | 08:52:07 | -58.2 | Dark | Down | 50.7 | 238.3 | Up | 08:37:07 - 09:07:07 | 6955 |
| Tonasket | 08:52:06 | -58.4 | Dark | Down | 50.9 | 238.6 | Up | 08:37:06 - 09:07:06 | 6935 |
| Okanogan | 08:52:06 | -58.7 | Dark | Down | 51.1 | 238.8 | Up | 08:37:06 - 09:07:06 | 6902 |
| Brewster | 08:52:06 | -59.0 | Dark | Down | 51.4 | 238.8 | Up | 08:37:06 - 09:07:06 | 6874 |
| Manson/Chelan | 08:52:07 | -59.3 | Dark | Down | 51.7 | 238.6 | Up | 08:37:07 - 09:07:07 | 6847 |
| Entiat | 08:52:06 | -59.5 | Dark | Down | 51.9 | 238.8 | Up | 08:37:06 - 09:07:06 | 6826 |
| Wenatchee | 08:52:06 | -59.8 | Dark | Down | 52.1 | 238.9 | Up | 08:37:06 - 09:07:06 | 6801 |
| Ellensburg | 08:52:05 | -60.2 | Dark | Down | 52.4 | 239.1 | Up | 08:37:05 - 09:07:05 | 6760 |
| Pasco | 08:51:59 | -60.6 | Dark | Down | 51.9 | 241.6 | Up | 08:36:59 - 09:06:59 | 6728 |
| Yakima | 08:52:05 | -60.6 | Dark | Down | 52.6 | 239.5 | Up | 08:37:05 - 09:07:05 | 6723 |
| PNWRO | 08:51:58 | -60.8 | Dark | Down | 51.9 | 242.1 | Up | 08:36:58 - 09:06:58 | 6711 |
| Toppenish/White Swan | 08:52:03 | -60.8 | Dark | Down | 52.6 | 240.0 | Up | 08:37:03 - 09:07:03 | 6708 |
| George/Umatilla | 08:51:59 | -61.0 | Dark | Down | 52.2 | 241.7 | Up | 08:36:59 - 09:06:59 | 6693 |
| Goldendale | 08:52:03 | -61.4 | Dark | Down | 53.2 | 240.1 | Up | 08:37:03 - 09:07:03 | 6648 |
| The Dalles | 08:52:03 | -61.7 | Dark | Down | 53.5 | 239.9 | Up | 08:37:03 - 09:07:03 | 6619 |
| Maupin | 08:52:02 | -62.1 | Dark | Down | 53.6 | 240.5 | Up | 08:37:02 - 09:07:02 | 6584 |
| Niwot | 08:51:04 | -59.7 | Dark | Up | 44.4 | 261.1 | Up | 08:36:04 - 09:06:04 | 6567 |
| Madras/Culver | 08:52:01 | -62.6 | Dark | Down | 53.9 | 241.1 | Up | 08:37:01 - 09:07:01 | 6533 |
| Redmond | 08:52:00 | -63.0 | Dark | Down | 54.1 | 241.5 | Up | 08:37:00 - 09:07:00 | 6499 |
| Sisters | 08:52:01 | -63.0 | Dark | Down | 54.4 | 241.0 | Up | 08:37:01 - 09:07:01 | 6492 |
| Bend | 08:51:59 | -63.2 | Dark | Down | 54.3 | 241.6 | Up | 08:36:59 - 09:06:59 | 6476 |
| Oregon Observatory | 08:51:59 | -63.4 | Dark | Down | 54.5 | 241.7 | Up | 08:36:59 - 09:06:59 | 6457 |
| La Pine/Gilchrist | 08:52:00 | -63.6 | Dark | Down | 54.6 | 241.8 | Up | 08:37:00 - 09:07:00 | 6437 |
| North Lake | 08:51:56 | -63.9 | Dark | Down | 54.5 | 243.1 | Up | 08:36:56 - 09:06:56 | 6412 |
| Paisley | 08:51:54 | -64.3 | Dark | Down | 54.5 | 244.2 | Up | 08:36:54 - 09:06:54 | 6370 |
| Lakeview | 08:51:52 | -64.7 | Dark | Down | 54.6 | 245.0 | Up | 08:36:52 - 09:06:52 | 6328 |
| Chiloquin | 08:51:58 | -64.8 | Dark | Down | 55.4 | 242.8 | Up | 08:36:58 - 09:06:58 | 6325 |
| Klamath Falls | 08:51:57 | -65.1 | Dark | Down | 55.5 | 243.4 | Up | 08:36:57 - 09:06:57 | 6295 |
| Tulelake | 08:51:55 | -65.2 | Dark | Down | 55.4 | 244.1 | Up | 08:36:55 - 09:06:55 | 6277 |
| Cedarville | 08:51:51 | -65.3 | Dark | Down | 54.7 | 246.0 | Up | 08:36:51 - 09:06:51 | 6271 |
| Fall River/Burney | 08:51:52 | -66.1 | Dark | Down | 55.8 | 245.3 | Up | 08:36:52 - 09:06:52 | 6194 |
| Susanville | 08:51:49 | -66.5 | Dark | Down | 55.5 | 247.0 | Up | 08:36:49 - 09:06:49 | 6154 |
| Gimple | 08:51:49 | -66.8 | Dark | Down | 55.8 | 247.1 | Up | 08:36:49 - 09:06:49 | 6122 |
| Greenville | 08:51:49 | -66.8 | Dark | Down | 55.8 | 247.0 | Up | 08:36:49 - 09:06:49 | 6120 |
| Portola | 08:51:47 | -67.0 | Dark | Down | 55.6 | 248.0 | Up | 08:36:47 - 09:06:47 | 6101 |
| Quincy | 08:51:49 | -67.0 | Dark | Down | 55.9 | 247.3 | Up | 08:36:49 - 09:06:49 | 6101 |
| Reno | 08:51:44 | -67.0 | Dark | Down | 55.2 | 249.0 | Up | 08:36:44 - 09:06:44 | 6093 |
| Carson City | 08:51:44 | -67.3 | Dark | Down | 55.4 | 249.5 | Up | 08:36:44 - 09:06:44 | 6060 |
| Yerington | 08:51:41 | -67.3 | Dark | Down | 55.0 | 250.4 | Up | 08:36:41 - 09:06:41 | 6058 |
| Gardnerville | 08:51:43 | -67.6 | Dark | Down | 55.4 | 249.9 | Up | 08:36:43 - 09:06:43 | 6038 |
| Hawthorne | 08:51:38 | -67.5 | Dark | Down | 54.7 | 251.5 | Up | 08:36:38 - 09:06:38 | 6029 |
| Tonopah | 08:51:32 | -67.4 | Dark | Up | 53.8 | 253.5 | Up | 08:36:32 - 09:06:32 | 6024 |
| Lee Vining | 08:51:38 | -68.2 | Dark | Down | 55.3 | 251.8 | Up | 08:36:38 - 09:06:38 | 5961 |
| Indian Springs | 08:51:24 | -67.9 | Dark | Up | 53.1 | 256.7 | Up | 08:36:24 - 09:06:24 | 5926 |
| Beatty | 08:51:28 | -68.2 | Dark | Up | 53.8 | 255.4 | Up | 08:36:28 - 09:06:28 | 5926 |
| Bishop | 08:51:34 | -68.5 | Dark | Down | 54.9 | 253.3 | Up | 08:36:34 - 09:06:34 | 5924 |
| Henderson | 08:51:21 | -68.0 | Dark | Up | 52.6 | 258.0 | Up | 08:36:21 - 09:06:21 | 5895 |
| Patrick | 08:51:16 | -67.9 | Dark | Up | 51.9 | 259.7 | Up | 08:36:16 - 09:06:16 | 5868 |
| DCO | 08:51:12 | -67.7 | Dark | Up | 51.4 | 260.6 | Up | 08:36:12 - 09:06:12 | 5861 |
| Lone Pine | 08:51:31 | -69.0 | Dark | Up | 54.9 | 254.7 | Up | 08:36:31 - 09:06:31 | 5860 |
| Searchlight/Boulder City | 08:51:19 | -68.4 | Dark | Up | 52.7 | 258.8 | Up | 08:36:19 - 09:06:19 | 5842 |
| Kingman/Dolan Springs | 08:51:16 | -68.1 | Dark | Up | 52.1 | 259.8 | Up | 08:36:16 - 09:06:16 | 5841 |
| Laughlin/Bullhead City | 08:51:17 | -68.4 | Dark | Up | 52.5 | 259.4 | Up | 08:36:17 - 09:06:17 | 5824 |
| Mohave Valley | 08:51:17 | -68.6 | Dark | Up | 52.5 | 259.8 | Up | 08:36:17 - 09:06:17 | 5798 |
| Lake Havasu City | 08:51:15 | -68.8 | Dark | Up | 52.4 | 260.5 | Up | 08:36:15 - 09:06:15 | 5766 |
| Parker | 08:51:14 | -69.0 | Dark | Up | 52.5 | 260.9 | Up | 08:36:14 - 09:06:14 | 5733 |
| Blythe | 08:51:13 | -69.6 | Dark | Up | 52.8 | 261.4 | Up | 08:36:13 - 09:06:13 | 5673 |
| CPSLO | 08:51:37 | -71.1 | Dark | Down | 57.2 | 254.2 | Up | 08:36:37 - 09:06:37 | 5660 |
| Idyllwild | 08:51:20 | -70.7 | Dark | Up | 54.5 | 259.7 | Up | 08:36:20 - 09:06:20 | 5620 |
| Wildwood | 08:51:28 | -71.3 | Dark | Up | 55.9 | 257.7 | Up | 08:36:28 - 09:06:28 | 5600 |
| Calipatria | 08:51:15 | -70.5 | Dark | Up | 53.6 | 261.4 | Up | 08:36:15 - 09:06:15 | 5596 |
| Yuma | 08:51:12 | -70.3 | Dark | Up | 53.0 | 262.6 | Up | 08:36:12 - 09:06:12 | 5581 |
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 33340, (2019/01/28 08:54UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 11.76 110 Alhena 06:37:42.8 +16:23:57 1.9 7.70 125 44 Gem 07:05:18.4 +22:38:15 5.9 1.38 119 PPM 096947 07:03:10.6 +21:10:29 8.5 0.34 119 PPM 096937 07:02:44.6 +21:45:02 10.1 0.32 119 33340 07:02:18.5 +21:26:54 15.0 120 Positions are for J2000
Event circumstances last updated at 2018/12/04 05:12:12 UT
Marc W. Buie, Southwest Research Institute