Event between (499514) 10OO127 and star GA1020:19127732 with event index number of 2324813
Geocentric closest approach at 2021/10/30 03:55:13 UTC
J2000 position of star is 22:16:09.1 +13:29:29
Equinox of date position of star is 22:17:13.2 +13:36:02
Stellar brightness G=15.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 147 degrees from the moon.
Moon is 37% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 45.0 AU from the Sun
and 44.5 AU from the Earth.
The TNO is moving 16.3
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 104 seconds.
The 1-sigma cross-track error in the shadow position is
1773 km.
The sky-plane scale is
32271.6 km/arcsec.
The TNO has an absolute magnitude Hv=4.7
Diameter=673.0 km assuming a 5% albedo -- 41.6 sec chord
Diameter=274.8 km assuming a 30% albedo -- 17.0 sec chord
Dynamical classification is SCATNEAR
Star training set for 499514, (2021/10/30 03:54UT) Object RA Dec mag sep mel Deneb 20:42:10.6 +45:21:33 1.3 37.59 114 Markab 23:05:51.0 +15:19:23 2.5 11.90 141 31 Peg 22:22:35.6 +12:18:57 5.0 1.83 148 PPM 141276 22:18:20.6 +13:00:31 7.5 0.65 147 PPM 141269 22:18:08.4 +13:40:22 9.3 0.24 147 PPM 141248 22:16:58.3 +13:40:17 10.3 0.09 147 499514 22:17:13.2 +13:36:02 15.7 147 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 15.2 km
RECON observability=1.0 and success probability=12.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 03:51:54 | -29.2 | Dark | Down | 55.0 | 178.7 | Up | 03:42:45 - 04:01:04 | -2360 |
| Peachland | 03:51:41 | -31.1 | Dark | Down | 53.7 | 184.6 | Up | 03:42:31 - 04:00:50 | -2542 |
| Clarence Fulton | 03:51:37 | -31.3 | Dark | Down | 53.1 | 185.3 | Up | 03:42:27 - 04:00:46 | -2548 |
| Summerland | 03:51:40 | -31.2 | Dark | Down | 53.8 | 184.8 | Up | 03:42:31 - 04:00:50 | -2555 |
| Kelowna | 03:51:39 | -31.3 | Dark | Down | 53.5 | 185.1 | Up | 03:42:30 - 04:00:49 | -2556 |
| Penticton | 03:51:40 | -31.3 | Dark | Down | 53.9 | 185.0 | Up | 03:42:31 - 04:00:50 | -2566 |
| Oliver | 03:51:42 | -31.4 | Dark | Down | 54.2 | 185.0 | Up | 03:42:33 - 04:00:52 | -2582 |
| Anarchist Mountain Observatory | 03:51:43 | -31.6 | Dark | Down | 54.4 | 185.4 | Up | 03:42:34 - 04:00:53 | -2601 |
| Manson/Chelan | 03:51:51 | -31.4 | Dark | Down | 55.5 | 184.2 | Up | 03:42:41 - 04:01:00 | -2602 |
| Tonasket | 03:51:45 | -31.7 | Dark | Down | 54.7 | 185.3 | Up | 03:42:36 - 04:00:55 | -2611 |
| Wenatchee | 03:51:54 | -31.4 | Dark | Down | 56.0 | 184.0 | Up | 03:42:44 - 04:01:03 | -2612 |
| Brewster | 03:51:48 | -31.6 | Dark | Down | 55.3 | 184.8 | Up | 03:42:39 - 04:00:58 | -2616 |
| Ellensburg | 03:51:55 | -31.4 | Dark | Down | 56.4 | 183.7 | Up | 03:42:46 - 04:01:05 | -2617 |
| Okanogan | 03:51:47 | -31.7 | Dark | Down | 55.0 | 185.1 | Up | 03:42:38 - 04:00:57 | -2617 |
| Yakima | 03:51:58 | -31.5 | Dark | Down | 56.9 | 183.7 | Up | 03:42:48 - 04:01:07 | -2634 |
| The Dalles | 03:52:04 | -31.3 | Dark | Down | 57.9 | 182.7 | Up | 03:42:54 - 04:01:13 | -2637 |
| Goldendale | 03:52:02 | -31.5 | Dark | Down | 57.6 | 183.3 | Up | 03:42:53 - 04:01:12 | -2653 |
| Toppenish/White Swan | 03:51:58 | -31.7 | Dark | Down | 57.1 | 184.0 | Up | 03:42:48 - 04:01:07 | -2656 |
| Maupin | 03:52:05 | -31.5 | Dark | Down | 58.3 | 182.9 | Up | 03:42:56 - 04:01:15 | -2664 |
| Sisters | 03:52:11 | -31.4 | Dark | Down | 59.2 | 182.1 | Up | 03:43:02 - 04:01:21 | -2670 |
| Oregon Observatory | 03:52:13 | -31.5 | Dark | Down | 59.6 | 182.4 | Up | 03:43:03 - 04:01:22 | -2698 |
| Bend | 03:52:12 | -31.6 | Dark | Down | 59.4 | 182.7 | Up | 03:43:02 - 04:01:21 | -2699 |
| Redmond | 03:52:11 | -31.6 | Dark | Down | 59.2 | 182.9 | Up | 03:43:01 - 04:01:20 | -2700 |
| La Pine/Gilchrist | 03:52:15 | -31.5 | Dark | Down | 59.8 | 182.3 | Up | 03:43:05 - 04:01:24 | -2703 |
| Chiloquin | 03:52:20 | -31.5 | Dark | Down | 60.9 | 181.8 | Up | 03:43:10 - 04:01:29 | -2729 |
| Pasco | 03:51:56 | -32.5 | Dark | Down | 57.1 | 186.3 | Up | 03:42:47 - 04:01:06 | -2747 |
| Klamath Falls | 03:52:22 | -31.6 | Dark | Down | 61.3 | 181.9 | Up | 03:43:12 - 04:01:31 | -2751 |
| North Lake | 03:52:16 | -32.1 | Dark | Down | 60.2 | 183.6 | Up | 03:43:06 - 04:01:25 | -2767 |
| PNWRO | 03:51:56 | -32.8 | Dark | Down | 57.3 | 186.8 | Up | 03:42:47 - 04:01:06 | -2775 |
| Paisley | 03:52:16 | -32.4 | Dark | Down | 60.7 | 184.3 | Up | 03:43:07 - 04:01:26 | -2819 |
| Fall River/Burney | 03:52:28 | -32.1 | Dark | Down | 62.4 | 182.9 | Up | 03:43:18 - 04:01:37 | -2835 |
| Lakeview | 03:52:19 | -32.7 | Dark | Down | 61.2 | 184.8 | Up | 03:43:10 - 04:01:29 | -2857 |
| Cedarville | 03:52:20 | -32.9 | Dark | Down | 61.9 | 185.3 | Up | 03:43:10 - 04:01:29 | -2902 |
| Greenville | 03:52:31 | -32.6 | Dark | Down | 63.3 | 184.0 | Up | 03:43:21 - 04:01:40 | -2912 |
| Gimple | 03:52:31 | -32.7 | Dark | Down | 63.3 | 184.2 | Up | 03:43:21 - 04:01:40 | -2918 |
| Susanville | 03:52:30 | -32.8 | Dark | Down | 63.0 | 184.6 | Up | 03:43:20 - 04:01:39 | -2920 |
| Quincy | 03:52:32 | -32.7 | Dark | Down | 63.5 | 184.0 | Up | 03:43:23 - 04:01:42 | -2922 |
| Portola | 03:52:31 | -33.1 | Dark | Down | 63.6 | 185.1 | Up | 03:43:22 - 04:01:41 | -2964 |
| Reno | 03:52:32 | -33.6 | Dark | Down | 63.8 | 186.6 | Up | 03:43:23 - 04:01:42 | -3026 |
| Carson City | 03:52:34 | -33.7 | Dark | Down | 64.2 | 186.7 | Up | 03:43:24 - 04:01:43 | -3046 |
| Gardnerville | 03:52:32 | -33.8 | Dark | Down | 64.4 | 186.9 | Up | 03:43:23 - 04:01:42 | -3062 |
| Yerington | 03:52:33 | -34.2 | Dark | Down | 64.3 | 188.2 | Up | 03:43:24 - 04:01:43 | -3104 |
| Lee Vining | 03:52:37 | -34.4 | Dark | Down | 65.3 | 188.6 | Up | 03:43:28 - 04:01:47 | -3160 |
| Hawthorne | 03:52:34 | -34.7 | Dark | Down | 64.7 | 189.5 | Up | 03:43:25 - 04:01:44 | -3168 |
| CPSLO | 03:52:56 | -33.7 | Dark | Down | 68.1 | 185.8 | Up | 03:43:47 - 04:02:06 | -3174 |
| Bishop | 03:52:40 | -35.1 | Dark | Down | 65.8 | 190.5 | Up | 03:43:30 - 04:01:49 | -3246 |
| Tonopah | 03:52:33 | -35.9 | Dark | Down | 64.9 | 192.9 | Up | 03:43:24 - 04:01:43 | -3300 |
| Beatty | 03:52:34 | -36.5 | Dark | Down | 66.0 | 194.6 | Up | 03:43:25 - 04:01:44 | -3398 |
| Wildwood | 03:52:57 | -35.5 | Dark | Down | 69.0 | 191.7 | Up | 03:43:48 - 04:02:07 | -3402 |
| Indian Springs | 03:52:34 | -37.4 | Dark | Down | 66.1 | 197.3 | Up | 03:43:25 - 04:01:44 | -3499 |
| Idyllwild | 03:52:54 | -37.1 | Dark | Down | 69.0 | 197.0 | Up | 03:43:45 - 04:02:04 | -3573 |
| Henderson | 03:52:38 | -38.0 | Dark | Down | 66.4 | 199.3 | Up | 03:43:28 - 04:01:47 | -3582 |
| Laughlin/Bullhead City | 03:52:38 | -38.5 | Dark | Down | 67.1 | 201.0 | Up | 03:43:28 - 04:01:47 | -3663 |
| Mohave Valley | 03:52:41 | -38.6 | Dark | Down | 67.3 | 201.3 | Up | 03:43:32 - 04:01:51 | -3679 |
| Calipatria | 03:52:53 | -38.1 | Dark | Down | 69.3 | 200.6 | Up | 03:43:44 - 04:02:03 | -3702 |
| Kingman/Dolan Springs | 03:52:40 | -38.9 | Dark | Down | 66.9 | 202.2 | Up | 03:43:30 - 04:01:49 | -3702 |
| Patrick | 03:52:34 | -39.0 | Dark | Down | 66.6 | 202.4 | Up | 03:43:25 - 04:01:44 | -3705 |
| Lake Havasu City | 03:52:45 | -38.9 | Dark | Down | 67.6 | 202.2 | Up | 03:43:35 - 04:01:54 | -3721 |
| Parker | 03:52:46 | -39.0 | Dark | Down | 67.9 | 202.7 | Up | 03:43:37 - 04:01:56 | -3743 |
| Blythe | 03:52:50 | -38.8 | Dark | Down | 68.5 | 202.5 | Up | 03:43:40 - 04:01:59 | -3749 |
| Yuma | 03:52:54 | -39.0 | Dark | Down | 69.4 | 203.3 | Up | 03:43:44 - 04:02:03 | -3798 |
| George/Scottsdale | 03:52:41 | -41.0 | Dark | Down | 67.5 | 208.9 | Up | 03:43:31 - 04:01:50 | -3960 |
| Dunrhomin | 03:51:50 | -44.1 | Dark | Down | 59.2 | 214.7 | Up | 03:42:41 - 04:01:00 | -4048 |
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 499514, (2021/10/30 03:54UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 37.59 114 Markab 23:04:45.8 +15:12:18 2.5 11.90 141 31 Peg 22:21:31.1 +12:12:19 5.0 1.83 148 PPM 141276 22:17:16.4 +12:53:56 7.5 0.65 147 PPM 141269 22:17:04.4 +13:33:48 9.3 0.24 147 PPM 141248 22:15:54.2 +13:33:44 10.3 0.09 147 499514 22:16:09.1 +13:29:29 15.7 147 Positions are for J2000
Event circumstances last updated at 2021/10/25 23:19:56 UT
Marc W. Buie, Southwest Research Institute