Event between 16TT94 and star GA0720:00198001 with event index number of 2346074
Geocentric closest approach at 2021/12/27 06:03:07 UTC
J2000 position of star is 02:40:23.9 -16:59:07
Equinox of date position of star is 02:41:25.1 -16:53:34
Stellar brightness G=13.0,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 145 degrees from the moon.
Moon is 48% illuminated.
TNO apparent brightness V=22.7
[RECON map]
TNO is 39.2 AU from the Sun
and 38.9 AU from the Earth.
The TNO is moving 16.9
km/sec on the sky relative to the star, or,
2.2 arcsec/hr.
The 1-sigma error in the time of the event is 268 seconds.
The 1-sigma cross-track error in the shadow position is
3361 km.
The sky-plane scale is
28182.4 km/arcsec.
The TNO has an absolute magnitude Hv=6.6
Diameter=242.1 km assuming a 5% albedo -- 16.8 sec chord
Diameter=98.8 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is SCATEXTD
Star training set for 16TT94, (2021/12/27 06:05UT) Object RA Dec mag sep mel Rigel 05:15:35.7 -08:10:40 0.1 38.54 110 68Omi Cet 02:20:27.5 -02:52:44 2.0 14.93 154 1Tau1Eri 02:46:07.8 -18:28:50 4.6 1.94 143 PPM 211851 02:42:14.3 -17:43:43 8.2 0.86 145 PPM 211829 02:41:23.6 -16:57:17 9.8 0.06 145 16TT94 02:41:25.7 -16:53:30 13.0 145 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
3.4 sigma about the mid-time.
The median site spacing is 3.7 km
RECON observability=0.9 and success probability=0.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Dunrhomin | 06:03:42 | -69.1 | Dark | Down | 20.9 | 222.8 | Low | 05:48:42 - 06:18:42 | 13132 |
| Clarence Fulton | 06:05:09 | -55.2 | Dark | Down | 18.4 | 208.1 | Really Low | 05:50:09 - 06:20:09 | 12859 |
| Kelowna | 06:05:09 | -55.4 | Dark | Down | 18.8 | 208.0 | Really Low | 05:50:09 - 06:20:09 | 12849 |
| Anarchist Mountain Observatory | 06:05:05 | -56.0 | Dark | Down | 19.5 | 208.2 | Really Low | 05:50:05 - 06:20:05 | 12843 |
| Penticton | 06:05:08 | -55.6 | Dark | Down | 19.1 | 207.9 | Really Low | 05:50:08 - 06:20:08 | 12842 |
| Summerland | 06:05:08 | -55.5 | Dark | Down | 19.1 | 207.8 | Really Low | 05:50:08 - 06:20:08 | 12840 |
| Peachland | 06:05:10 | -55.3 | Dark | Down | 19.0 | 207.7 | Really Low | 05:50:10 - 06:20:10 | 12838 |
| Oliver | 06:05:07 | -55.8 | Dark | Down | 19.5 | 208.0 | Really Low | 05:50:07 - 06:20:07 | 12838 |
| Tonasket | 06:05:03 | -56.1 | Dark | Down | 19.8 | 208.2 | Really Low | 05:50:03 - 06:20:03 | 12835 |
| Okanogan | 06:05:04 | -56.3 | Dark | Down | 20.2 | 208.1 | Low | 05:50:04 - 06:20:04 | 12826 |
| Brewster | 06:05:03 | -56.3 | Dark | Down | 20.5 | 208.0 | Low | 05:50:03 - 06:20:03 | 12815 |
| PNWRO | 06:04:52 | -58.0 | Dark | Down | 22.1 | 209.2 | Low | 05:49:52 - 06:19:52 | 12811 |
| Pasco | 06:04:54 | -57.8 | Dark | Down | 21.9 | 208.9 | Low | 05:49:54 - 06:19:54 | 12807 |
| Manson/Chelan | 06:05:04 | -56.3 | Dark | Down | 20.8 | 207.6 | Low | 05:50:04 - 06:20:04 | 12799 |
| Wenatchee | 06:05:03 | -56.4 | Dark | Down | 21.3 | 207.5 | Low | 05:50:03 - 06:20:03 | 12785 |
| Ellensburg | 06:05:03 | -56.6 | Dark | Down | 21.7 | 207.4 | Low | 05:50:03 - 06:20:03 | 12771 |
| Toppenish/White Swan | 06:04:59 | -57.0 | Dark | Down | 22.2 | 207.7 | Low | 05:49:59 - 06:19:59 | 12765 |
| Yakima | 06:05:00 | -56.8 | Dark | Down | 22.1 | 207.5 | Low | 05:50:00 - 06:20:00 | 12763 |
| Goldendale | 06:04:58 | -57.0 | Dark | Down | 22.8 | 207.3 | Low | 05:49:58 - 06:19:58 | 12739 |
| George/Scottsdale | 06:03:37 | -68.7 | Dark | Down | 29.4 | 218.9 | Low | 05:48:37 - 06:18:37 | 12734 |
| The Dalles | 06:04:59 | -56.9 | Dark | Down | 23.2 | 207.0 | Low | 05:49:59 - 06:19:59 | 12721 |
| Patrick | 06:03:53 | -66.6 | Dark | Down | 29.0 | 216.5 | Low | 05:48:53 - 06:18:53 | 12720 |
| Maupin | 06:04:57 | -57.2 | Dark | Down | 23.5 | 207.2 | Low | 05:49:57 - 06:19:57 | 12717 |
| Kingman/Dolan Springs | 06:03:51 | -66.5 | Dark | Down | 29.3 | 216.4 | Low | 05:48:51 - 06:18:51 | 12705 |
| Henderson | 06:03:58 | -65.5 | Dark | Down | 29.0 | 215.3 | Low | 05:48:58 - 06:18:58 | 12699 |
| Victoria | 06:05:17 | -54.1 | Dark | Down | 21.2 | 204.4 | Low | 05:50:17 - 06:20:17 | 12695 |
| Redmond | 06:04:53 | -57.6 | Dark | Down | 24.3 | 207.3 | Low | 05:49:53 - 06:19:53 | 12694 |
| Indian Springs | 06:04:04 | -64.8 | Dark | Down | 28.9 | 214.4 | Low | 05:49:04 - 06:19:04 | 12690 |
| Laughlin/Bullhead City | 06:03:54 | -66.1 | Dark | Down | 29.5 | 215.9 | Low | 05:48:54 - 06:18:54 | 12684 |
| Bend | 06:04:54 | -57.7 | Dark | Down | 24.6 | 207.2 | Low | 05:49:54 - 06:19:54 | 12684 |
| Paisley | 06:04:46 | -58.8 | Dark | Down | 25.5 | 208.2 | Low | 05:49:46 - 06:19:46 | 12681 |
| North Lake | 06:04:49 | -58.3 | Dark | Down | 25.2 | 207.8 | Low | 05:49:49 - 06:19:49 | 12681 |
| Sisters | 06:04:55 | -57.4 | Dark | Down | 24.4 | 206.9 | Low | 05:49:55 - 06:19:55 | 12680 |
| Tonopah | 06:04:15 | -63.1 | Dark | Down | 28.3 | 212.6 | Low | 05:49:15 - 06:19:15 | 12680 |
| Lakeview | 06:04:43 | -59.2 | Dark | Down | 25.9 | 208.5 | Low | 05:49:43 - 06:19:43 | 12676 |
| Oregon Observatory | 06:04:54 | -57.7 | Dark | Down | 24.8 | 207.1 | Low | 05:49:54 - 06:19:54 | 12675 |
| Mohave Valley | 06:03:52 | -66.3 | Dark | Down | 29.8 | 216.0 | Low | 05:48:52 - 06:18:52 | 12675 |
| Lake Havasu City | 06:03:49 | -66.6 | Dark | Down | 30.0 | 216.4 | Low | 05:48:49 - 06:18:49 | 12671 |
| La Pine/Gilchrist | 06:04:53 | -57.7 | Dark | Down | 25.0 | 207.1 | Low | 05:49:53 - 06:19:53 | 12668 |
| Cedarville | 06:04:39 | -59.6 | Dark | Down | 26.4 | 208.8 | Low | 05:49:39 - 06:19:39 | 12665 |
| Beatty | 06:04:09 | -63.9 | Dark | Down | 29.1 | 213.3 | Low | 05:49:09 - 06:19:09 | 12660 |
| Parker | 06:03:48 | -66.7 | Dark | Down | 30.2 | 216.5 | Up | 05:48:48 - 06:18:48 | 12659 |
| Hawthorne | 06:04:23 | -61.9 | Dark | Down | 28.5 | 211.1 | Low | 05:49:23 - 06:19:23 | 12639 |
| Yerington | 06:04:28 | -61.3 | Dark | Down | 28.3 | 210.4 | Low | 05:49:28 - 06:19:28 | 12632 |
| Blythe | 06:03:47 | -66.7 | Dark | Down | 30.8 | 216.4 | Up | 05:48:47 - 06:18:47 | 12629 |
| Chiloquin | 06:04:49 | -58.0 | Dark | Down | 26.1 | 207.0 | Low | 05:49:49 - 06:19:49 | 12627 |
| Reno | 06:04:31 | -60.7 | Dark | Down | 28.0 | 209.6 | Low | 05:49:31 - 06:19:31 | 12623 |
| Klamath Falls | 06:04:48 | -58.2 | Dark | Down | 26.4 | 207.1 | Low | 05:49:48 - 06:19:48 | 12621 |
| Susanville | 06:04:37 | -59.7 | Dark | Down | 27.6 | 208.6 | Low | 05:49:37 - 06:19:37 | 12616 |
| Carson City | 06:04:29 | -60.8 | Dark | Down | 28.4 | 209.8 | Low | 05:49:29 - 06:19:29 | 12613 |
| Bishop | 06:04:17 | -62.5 | Dark | Down | 29.4 | 211.6 | Low | 05:49:17 - 06:19:17 | 12611 |
| Gardnerville | 06:04:28 | -61.0 | Dark | Down | 28.5 | 209.9 | Low | 05:49:28 - 06:19:28 | 12608 |
| Portola | 06:04:35 | -60.1 | Dark | Down | 28.1 | 208.9 | Low | 05:49:35 - 06:19:35 | 12606 |
| Fall River/Burney | 06:04:42 | -59.0 | Dark | Down | 27.3 | 207.7 | Low | 05:49:42 - 06:19:42 | 12604 |
| Lee Vining | 06:04:22 | -61.8 | Dark | Down | 29.2 | 210.7 | Low | 05:49:22 - 06:19:22 | 12603 |
| Gimple | 06:04:37 | -59.7 | Dark | Down | 27.9 | 208.5 | Low | 05:49:37 - 06:19:37 | 12599 |
| Greenville | 06:04:38 | -59.6 | Dark | Down | 27.9 | 208.4 | Low | 05:49:38 - 06:19:38 | 12596 |
| Yuma | 06:03:43 | -66.9 | Dark | Down | 31.6 | 216.7 | Up | 05:48:43 - 06:18:43 | 12592 |
| Quincy | 06:04:37 | -59.7 | Dark | Down | 28.1 | 208.4 | Low | 05:49:37 - 06:19:37 | 12590 |
| Calipatria | 06:03:49 | -66.1 | Dark | Down | 31.7 | 215.7 | Up | 05:48:49 - 06:18:49 | 12574 |
| Idyllwild | 06:03:56 | -65.0 | Dark | Down | 31.7 | 214.3 | Up | 05:48:56 - 06:18:56 | 12551 |
| Wildwood | 06:04:05 | -63.4 | Dark | Down | 32.3 | 212.4 | Up | 05:49:05 - 06:19:05 | 12488 |
| CPSLO | 06:04:17 | -61.5 | Dark | Down | 32.1 | 210.0 | Up | 05:49:17 - 06:19:17 | 12447 |
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 16TT94, (2021/12/27 06:05UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 38.54 110 68Omi Cet 02:19:20.8 -02:58:45 2.0 14.93 154 1Tau1Eri 02:45:06.7 -18:34:21 4.6 1.94 143 PPM 211851 02:41:12.8 -17:49:19 8.2 0.86 145 PPM 211829 02:40:21.8 -17:02:53 9.8 0.06 145 16TT94 02:40:23.9 -16:59:07 13.0 145 Positions are for J2000
Event circumstances last updated at 2021/10/10 01:01:33 UT
Marc W. Buie, Southwest Research Institute