Event between (84719) 02VR128 and star GA1180:00598934 with event index number of 2404644
Geocentric closest approach at 2022/02/21 06:49:06 UTC
J2000 position of star is 03:46:32.9 +29:05:45
Equinox of date position of star is 03:47:54.0 +29:09:46
Stellar brightness G=12.5,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 146 degrees from the moon.
Moon is 78% illuminated.
TNO apparent brightness V=21.6
[RECON map]
TNO is 40.7 AU from the Sun
and 40.7 AU from the Earth.
The TNO is moving 6.1
km/sec on the sky relative to the star, or,
0.7 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
1639 km.
The sky-plane scale is
29498.3 km/arcsec.
The TNO has an absolute magnitude Hv=5.3
Diameter=532.1 km assuming a 5% albedo -- 87.1 sec chord
Diameter=217.2 km assuming a 30% albedo -- 35.5 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 84719, (2022/02/21 06:48UT) Object RA Dec mag sep mel Aldebaran 04:37:11.6 +16:33:07 0.8 16.94 139 44Zet Per 03:55:31.8 +31:56:51 2.8 3.23 143 PPM 068850 03:53:27.7 +31:14:00 6.3 2.39 144 PPM 092826 03:46:49.2 +28:44:11 7.6 0.49 146 PPM 092854 03:47:31.2 +28:55:37 9.1 0.25 146 PPM 092877 03:48:21.8 +28:58:47 11.7 0.21 146 84719 03:47:54.8 +29:09:48 12.5 146 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 5.1 km
RECON observability=0.9 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) |
| Sleaford | 06:53:02 | -48.2 | Dark | Up | 21.5 | 290.2 | Low | 06:38:02 - 07:08:02 | 9390 |
| Dunrhomin | 06:56:08 | -60.0 | Dark | Up | 15.9 | 294.9 | Really Low | 06:41:08 - 07:11:08 | 9166 |
| Kelowna | 06:53:58 | -47.5 | Dark | Up | 28.9 | 281.9 | Low | 06:38:58 - 07:08:58 | 8903 |
| Penticton | 06:53:58 | -47.8 | Dark | Up | 28.9 | 282.1 | Low | 06:38:58 - 07:08:58 | 8891 |
| Peachland | 06:53:57 | -47.5 | Dark | Up | 29.1 | 281.8 | Low | 06:38:57 - 07:08:57 | 8889 |
| Summerland | 06:54:00 | -47.7 | Dark | Up | 29.0 | 281.9 | Low | 06:39:00 - 07:09:00 | 8889 |
| Kamloops | 06:53:42 | -46.5 | Dark | Up | 29.7 | 280.8 | Low | 06:38:42 - 07:08:42 | 8889 |
| Anarchist Mountain Observatory | 06:54:12 | -48.3 | Dark | Up | 28.6 | 282.5 | Low | 06:39:12 - 07:09:12 | 8886 |
| Oliver | 06:54:07 | -48.1 | Dark | Up | 28.8 | 282.3 | Low | 06:39:07 - 07:09:07 | 8882 |
| Tonasket | 06:54:16 | -48.6 | Dark | Up | 28.6 | 282.6 | Low | 06:39:16 - 07:09:16 | 8875 |
| Okanogan | 06:54:19 | -48.8 | Dark | Up | 28.6 | 282.7 | Low | 06:39:19 - 07:09:19 | 8860 |
| Brewster | 06:54:24 | -49.0 | Dark | Up | 28.7 | 282.7 | Low | 06:39:24 - 07:09:24 | 8845 |
| Manson/Chelan | 06:54:28 | -49.1 | Dark | Up | 28.8 | 282.6 | Low | 06:39:28 - 07:09:28 | 8825 |
| PNWRO | 06:54:59 | -51.2 | Dark | Up | 27.5 | 284.5 | Low | 06:39:59 - 07:09:59 | 8822 |
| Pasco | 06:54:54 | -50.9 | Dark | Up | 27.7 | 284.2 | Low | 06:39:54 - 07:09:54 | 8820 |
| Wenatchee | 06:54:37 | -49.4 | Dark | Up | 28.8 | 282.8 | Low | 06:39:37 - 07:09:37 | 8805 |
| Ellensburg | 06:54:43 | -49.7 | Dark | Up | 28.9 | 282.9 | Low | 06:39:43 - 07:09:43 | 8785 |
| Toppenish/White Swan | 06:54:53 | -50.3 | Dark | Up | 28.6 | 283.3 | Low | 06:39:53 - 07:09:53 | 8773 |
| Yakima | 06:54:48 | -50.1 | Dark | Up | 28.8 | 283.1 | Low | 06:39:48 - 07:09:48 | 8772 |
| Goldendale | 06:55:01 | -50.6 | Dark | Up | 28.7 | 283.4 | Low | 06:40:01 - 07:10:01 | 8739 |
| The Dalles | 06:55:06 | -50.7 | Dark | Up | 28.9 | 283.3 | Low | 06:40:06 - 07:10:06 | 8716 |
| Victoria | 06:54:17 | -47.3 | Dark | Up | 31.1 | 280.0 | Up | 06:39:17 - 07:09:17 | 8715 |
| Maupin | 06:55:14 | -51.1 | Dark | Up | 28.7 | 283.6 | Low | 06:40:14 - 07:10:14 | 8708 |
| Redmond | 06:55:28 | -51.8 | Dark | Up | 28.5 | 284.1 | Low | 06:40:28 - 07:10:28 | 8675 |
| George/Scottsdale | 06:58:04 | -64.8 | Dark | Up | 17.8 | 293.6 | Really Low | 06:43:04 - 07:13:04 | 8665 |
| Bend | 06:55:30 | -52.0 | Dark | Up | 28.6 | 284.1 | Low | 06:40:30 - 07:10:30 | 8662 |
| Sisters | 06:55:29 | -51.7 | Dark | Up | 28.8 | 283.8 | Low | 06:40:29 - 07:10:29 | 8658 |
| Patrick | 06:57:40 | -62.5 | Dark | Up | 20.0 | 292.1 | Low | 06:42:40 - 07:12:40 | 8652 |
| North Lake | 06:55:42 | -52.8 | Dark | Up | 28.0 | 284.8 | Low | 06:40:42 - 07:10:42 | 8651 |
| Oregon Observatory | 06:55:36 | -52.1 | Dark | Up | 28.6 | 284.1 | Low | 06:40:36 - 07:10:36 | 8650 |
| Paisley | 06:55:51 | -53.4 | Dark | Up | 27.6 | 285.3 | Low | 06:40:51 - 07:10:51 | 8647 |
| La Pine/Gilchrist | 06:55:36 | -52.2 | Dark | Up | 28.6 | 284.2 | Low | 06:40:36 - 07:10:36 | 8641 |
| Lakeview | 06:56:01 | -54.0 | Dark | Up | 27.3 | 285.7 | Low | 06:41:01 - 07:11:01 | 8637 |
| Kingman/Dolan Springs | 06:57:43 | -62.7 | Dark | Up | 20.1 | 292.1 | Low | 06:42:43 - 07:12:43 | 8635 |
| Henderson | 06:57:32 | -61.5 | Dark | Up | 21.1 | 291.3 | Low | 06:42:32 - 07:12:32 | 8630 |
| Indian Springs | 06:57:29 | -60.8 | Dark | Up | 21.9 | 290.8 | Low | 06:42:29 - 07:12:29 | 8623 |
| Cedarville | 06:56:12 | -54.6 | Dark | Up | 27.0 | 286.1 | Low | 06:41:12 - 07:11:12 | 8621 |
| Tonopah | 06:57:05 | -58.8 | Dark | Up | 23.6 | 289.4 | Low | 06:42:05 - 07:12:05 | 8617 |
| Laughlin/Bullhead City | 06:57:45 | -62.5 | Dark | Up | 20.5 | 291.8 | Low | 06:42:45 - 07:12:45 | 8611 |
| Mohave Valley | 06:57:49 | -62.7 | Dark | Up | 20.3 | 291.9 | Low | 06:42:49 - 07:12:49 | 8599 |
| Lake Havasu City | 06:57:54 | -63.2 | Dark | Up | 20.0 | 292.2 | Really Low | 06:42:54 - 07:12:54 | 8593 |
| Beatty | 06:57:24 | -60.0 | Dark | Up | 22.8 | 290.1 | Low | 06:42:24 - 07:12:24 | 8589 |
| Chiloquin | 06:55:54 | -53.0 | Dark | Up | 28.5 | 284.6 | Low | 06:40:54 - 07:10:54 | 8586 |
| Parker | 06:57:59 | -63.5 | Dark | Up | 19.8 | 292.3 | Really Low | 06:42:59 - 07:12:59 | 8578 |
| Klamath Falls | 06:56:01 | -53.3 | Dark | Up | 28.4 | 284.9 | Low | 06:41:01 - 07:11:01 | 8577 |
| Hawthorne | 06:56:59 | -57.8 | Dark | Up | 24.8 | 288.5 | Low | 06:41:59 - 07:11:59 | 8573 |
| Yerington | 06:56:51 | -57.2 | Dark | Up | 25.4 | 288.0 | Low | 06:41:51 - 07:11:51 | 8568 |
| Reno | 06:56:42 | -56.4 | Dark | Up | 26.1 | 287.4 | Low | 06:41:42 - 07:11:42 | 8561 |
| Susanville | 06:56:26 | -55.3 | Dark | Up | 27.0 | 286.5 | Low | 06:41:26 - 07:11:26 | 8558 |
| Fall River/Burney | 06:56:19 | -54.5 | Dark | Up | 27.7 | 285.7 | Low | 06:41:19 - 07:11:19 | 8549 |
| Carson City | 06:56:49 | -56.7 | Dark | Up | 25.9 | 287.5 | Low | 06:41:49 - 07:11:49 | 8548 |
| Portola | 06:56:38 | -55.9 | Dark | Up | 26.6 | 286.9 | Low | 06:41:38 - 07:11:38 | 8543 |
| Blythe | 06:58:11 | -63.8 | Dark | Up | 19.8 | 292.4 | Really Low | 06:43:11 - 07:13:11 | 8542 |
| Gardnerville | 06:56:52 | -57.0 | Dark | Up | 25.8 | 287.7 | Low | 06:41:52 - 07:11:52 | 8540 |
| Gimple | 06:56:34 | -55.5 | Dark | Up | 27.0 | 286.5 | Low | 06:41:34 - 07:11:34 | 8538 |
| Bishop | 06:57:18 | -58.9 | Dark | Up | 24.2 | 289.1 | Low | 06:42:18 - 07:12:18 | 8536 |
| Greenville | 06:56:33 | -55.4 | Dark | Up | 27.1 | 286.4 | Low | 06:41:33 - 07:11:33 | 8534 |
| Lee Vining | 06:57:09 | -58.1 | Dark | Up | 25.0 | 288.5 | Low | 06:42:09 - 07:12:09 | 8529 |
| Quincy | 06:56:36 | -55.6 | Dark | Up | 27.0 | 286.6 | Low | 06:41:36 - 07:11:36 | 8526 |
| Yuma | 06:58:22 | -64.6 | Dark | Up | 19.5 | 292.7 | Really Low | 06:43:22 - 07:13:22 | 8497 |
| Calipatria | 06:58:17 | -63.9 | Dark | Up | 20.3 | 292.2 | Low | 06:43:17 - 07:13:17 | 8477 |
| Idyllwild | 06:58:08 | -62.8 | Dark | Up | 21.5 | 291.4 | Low | 06:43:08 - 07:13:08 | 8453 |
| Wildwood | 06:58:04 | -61.5 | Dark | Up | 23.1 | 290.5 | Low | 06:43:04 - 07:13:04 | 8382 |
| CPSLO | 06:57:48 | -59.5 | Dark | Up | 25.2 | 289.0 | Low | 06:42:48 - 07:12:48 | 8341 |
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 84719, (2022/02/21 06:48UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 16.94 139 44Zet Per 03:54:07.9 +31:53:01 2.8 3.23 143 PPM 068850 03:52:04.4 +31:10:06 6.3 2.39 144 PPM 092826 03:45:27.6 +28:40:06 7.6 0.49 146 PPM 092854 03:46:09.5 +28:51:33 9.1 0.25 146 PPM 092877 03:47:00.0 +28:54:45 11.7 0.21 146 84719 03:46:32.9 +29:05:45 12.5 146 Positions are for J2000
Event circumstances last updated at 2021/12/07 01:45:47 UT
Marc W. Buie, Southwest Research Institute