Event between (8405) Asbolus and star GA1300:02978775 with event index number of 1146980
Geocentric closest approach at 2021/12/15 06:02:17 UTC
J2000 position of star is 05:38:09.8 +41:26:27
Equinox of date position of star is 05:39:43.0 +41:27:07
Stellar brightness G=12.4,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 48 degrees from the moon.
Moon is 87% illuminated.
TNO apparent brightness V=22.9
[RECON map]
TNO is 23.9 AU from the Sun
and 22.9 AU from the Earth.
The TNO is moving 26.1
km/sec on the sky relative to the star, or,
5.6 arcsec/hr.
The 1-sigma error in the time of the event is 96 seconds.
The 1-sigma cross-track error in the shadow position is
860 km.
The sky-plane scale is
16626.3 km/arcsec.
The TNO has an absolute magnitude Hv=9.1
Diameter=91.2 km assuming a 5% albedo -- 3.5 sec chord
Diameter=37.2 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
Star training set for 8405, (2021/12/15 06:02UT) Object RA Dec mag sep mel Aldebaran 04:37:11.0 +16:33:06 0.8 28.30 29 34Bet Aur 06:01:08.4 +44:56:50 1.9 5.24 53 PPM 048217 05:35:02.5 +42:07:21 6.2 1.10 48 PPM 048329 05:40:41.9 +41:22:07 7.1 0.20 49 PPM 048328 05:40:37.8 +41:31:39 10.0 0.19 49 8405 05:39:43.1 +41:27:07 12.4 49 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 26.8 km
RECON observability=1.0 and success probability=20.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 06:03:34 | -54.9 | Dark | Up | 67.5 | 102.6 | Up | 05:55:06 - 06:12:02 | -978 |
| Kelowna | 06:03:33 | -55.9 | Dark | Up | 68.2 | 101.6 | Up | 05:55:05 - 06:12:01 | -1082 |
| Peachland | 06:03:34 | -55.8 | Dark | Up | 68.1 | 101.0 | Up | 05:55:06 - 06:12:02 | -1087 |
| Sleaford | 06:02:57 | -59.3 | Dark | Up | 75.0 | 128.9 | Up | 05:54:29 - 06:11:25 | -1104 |
| Summerland | 06:03:34 | -56.0 | Dark | Up | 68.1 | 100.7 | Up | 05:55:06 - 06:12:02 | -1104 |
| Penticton | 06:03:34 | -56.1 | Dark | Up | 68.2 | 100.7 | Up | 05:55:06 - 06:12:02 | -1114 |
| Victoria | 06:03:45 | -54.7 | Dark | Up | 65.9 | 94.7 | Up | 05:55:17 - 06:12:13 | -1116 |
| Oliver | 06:03:35 | -56.3 | Dark | Up | 68.3 | 99.8 | Up | 05:55:07 - 06:12:03 | -1150 |
| Anarchist Mountain Observatory | 06:03:35 | -56.5 | Dark | Up | 68.5 | 99.6 | Up | 05:55:07 - 06:12:03 | -1172 |
| Tonasket | 06:03:35 | -56.7 | Dark | Up | 68.5 | 98.8 | Up | 05:55:07 - 06:12:03 | -1202 |
| Okanogan | 06:03:36 | -56.8 | Dark | Up | 68.4 | 97.8 | Up | 05:55:08 - 06:12:04 | -1233 |
| Brewster | 06:03:37 | -56.9 | Dark | Up | 68.3 | 96.9 | Up | 05:55:09 - 06:12:05 | -1256 |
| Manson/Chelan | 06:03:38 | -56.8 | Dark | Up | 68.1 | 96.1 | Up | 05:55:10 - 06:12:06 | -1268 |
| Wenatchee | 06:03:39 | -57.0 | Dark | Up | 68.0 | 94.7 | Up | 05:55:11 - 06:12:07 | -1312 |
| Ellensburg | 06:03:41 | -57.2 | Dark | Up | 67.9 | 93.5 | Up | 05:55:13 - 06:12:09 | -1349 |
| Yakima | 06:03:42 | -57.4 | Dark | Up | 67.9 | 92.5 | Up | 05:55:14 - 06:12:10 | -1390 |
| Toppenish/White Swan | 06:03:41 | -57.6 | Dark | Up | 68.0 | 92.1 | Up | 05:55:13 - 06:12:09 | -1417 |
| Goldendale | 06:03:43 | -57.7 | Dark | Up | 67.8 | 90.4 | Up | 05:55:15 - 06:12:11 | -1462 |
| Pasco | 06:03:38 | -58.4 | Dark | Up | 68.9 | 92.8 | Up | 05:55:10 - 06:12:06 | -1463 |
| The Dalles | 06:03:44 | -57.6 | Dark | Up | 67.5 | 89.6 | Up | 05:55:16 - 06:12:12 | -1476 |
| PNWRO | 06:03:38 | -58.7 | Dark | Up | 69.1 | 92.4 | Up | 05:55:10 - 06:12:06 | -1494 |
| Maupin | 06:03:45 | -57.9 | Dark | Up | 67.6 | 88.7 | Up | 05:55:17 - 06:12:13 | -1522 |
| Sisters | 06:03:48 | -58.1 | Dark | Up | 67.2 | 86.3 | Up | 05:55:20 - 06:12:16 | -1598 |
| Redmond | 06:03:47 | -58.3 | Dark | Up | 67.5 | 86.5 | Up | 05:55:19 - 06:12:15 | -1612 |
| Bend | 06:03:47 | -58.4 | Dark | Up | 67.4 | 85.9 | Up | 05:55:19 - 06:12:15 | -1630 |
| Oregon Observatory | 06:03:48 | -58.4 | Dark | Up | 67.3 | 85.4 | Up | 05:55:20 - 06:12:16 | -1644 |
| La Pine/Gilchrist | 06:03:48 | -58.4 | Dark | Up | 67.2 | 84.9 | Up | 05:55:20 - 06:12:16 | -1664 |
| North Lake | 06:03:48 | -59.0 | Dark | Up | 67.6 | 84.1 | Up | 05:55:20 - 06:12:16 | -1726 |
| Chiloquin | 06:03:51 | -58.8 | Dark | Up | 66.8 | 82.1 | Up | 05:55:23 - 06:12:19 | -1768 |
| Paisley | 06:03:47 | -59.5 | Dark | Up | 67.8 | 83.0 | Up | 05:55:19 - 06:12:15 | -1793 |
| Klamath Falls | 06:03:52 | -59.0 | Dark | Up | 66.8 | 81.3 | Up | 05:55:24 - 06:12:20 | -1806 |
| Lakeview | 06:03:48 | -59.9 | Dark | Up | 67.9 | 81.8 | Up | 05:55:20 - 06:12:16 | -1851 |
| Cedarville | 06:03:48 | -60.4 | Dark | Up | 67.9 | 80.3 | Up | 05:55:20 - 06:12:16 | -1925 |
| Fall River/Burney | 06:03:52 | -59.8 | Dark | Up | 66.9 | 78.7 | Up | 05:55:24 - 06:12:20 | -1939 |
| Susanville | 06:03:51 | -60.6 | Dark | Up | 67.3 | 77.5 | Up | 05:55:23 - 06:12:19 | -2027 |
| Greenville | 06:03:52 | -60.5 | Dark | Up | 67.1 | 76.8 | Up | 05:55:24 - 06:12:20 | -2047 |
| Gimple | 06:03:52 | -60.6 | Dark | Up | 67.1 | 76.8 | Up | 05:55:24 - 06:12:20 | -2049 |
| Quincy | 06:03:53 | -60.6 | Dark | Up | 67.0 | 76.3 | Up | 05:55:25 - 06:12:21 | -2068 |
| Portola | 06:03:51 | -61.0 | Dark | Up | 67.3 | 76.1 | Up | 05:55:23 - 06:12:19 | -2095 |
| Reno | 06:03:50 | -61.5 | Dark | Up | 67.8 | 75.6 | Up | 05:55:22 - 06:12:18 | -2142 |
| Carson City | 06:03:50 | -61.7 | Dark | Up | 67.7 | 74.8 | Up | 05:55:22 - 06:12:18 | -2180 |
| Gardnerville | 06:03:51 | -61.9 | Dark | Up | 67.7 | 74.2 | Up | 05:55:23 - 06:12:19 | -2207 |
| Yerington | 06:03:49 | -62.2 | Dark | Up | 68.1 | 74.4 | Up | 05:55:21 - 06:12:17 | -2219 |
| Hawthorne | 06:03:48 | -62.8 | Dark | Up | 68.4 | 73.3 | Up | 05:55:20 - 06:12:16 | -2283 |
| Lee Vining | 06:03:50 | -62.7 | Dark | Up | 67.8 | 71.9 | Up | 05:55:22 - 06:12:18 | -2328 |
| Tonopah | 06:03:44 | -64.0 | Dark | Up | 69.3 | 72.2 | Up | 05:55:16 - 06:12:12 | -2372 |
| Dunrhomin | 06:03:06 | -69.7 | Dark | Up | 78.8 | 79.1 | Up | 05:54:38 - 06:11:34 | -2397 |
| Bishop | 06:03:49 | -63.5 | Dark | Up | 68.2 | 70.5 | Up | 05:55:21 - 06:12:17 | -2412 |
| Beatty | 06:03:44 | -64.9 | Dark | Up | 69.2 | 69.3 | Up | 05:55:16 - 06:12:12 | -2506 |
| CPSLO | 06:03:58 | -62.6 | Dark | Up | 65.8 | 66.3 | Up | 05:55:30 - 06:12:26 | -2559 |
| Indian Springs | 06:03:41 | -65.8 | Dark | Up | 69.9 | 68.2 | Up | 05:55:13 - 06:12:09 | -2570 |
| Henderson | 06:03:40 | -66.5 | Dark | Up | 70.2 | 66.7 | Up | 05:55:12 - 06:12:08 | -2645 |
| Patrick | 06:03:37 | -67.6 | Dark | Up | 70.8 | 64.7 | Up | 05:55:09 - 06:12:05 | -2740 |
| Laughlin/Bullhead City | 06:03:40 | -67.2 | Dark | Up | 70.2 | 64.4 | Up | 05:55:12 - 06:12:08 | -2748 |
| Wildwood | 06:03:53 | -64.5 | Dark | Up | 66.8 | 63.3 | Up | 05:55:25 - 06:12:21 | -2748 |
| Kingman/Dolan Springs | 06:03:38 | -67.6 | Dark | Up | 70.6 | 64.2 | Up | 05:55:10 - 06:12:06 | -2759 |
| Mohave Valley | 06:03:40 | -67.3 | Dark | Up | 70.1 | 63.7 | Up | 05:55:12 - 06:12:08 | -2777 |
| Lake Havasu City | 06:03:40 | -67.7 | Dark | Up | 70.1 | 62.6 | Up | 05:55:12 - 06:12:08 | -2826 |
| Idyllwild | 06:03:48 | -66.1 | Dark | Up | 68.0 | 61.9 | Up | 05:55:20 - 06:12:16 | -2842 |
| Parker | 06:03:40 | -67.8 | Dark | Up | 69.9 | 61.7 | Up | 05:55:12 - 06:12:08 | -2864 |
| Blythe | 06:03:41 | -67.8 | Dark | Up | 69.4 | 60.6 | Up | 05:55:13 - 06:12:09 | -2912 |
| Calipatria | 06:03:45 | -67.3 | Dark | Up | 68.5 | 60.0 | Up | 05:55:17 - 06:12:13 | -2939 |
| George/Scottsdale | 06:03:33 | -69.8 | Dark | Up | 71.4 | 59.2 | Up | 05:55:05 - 06:12:01 | -2970 |
| Yuma | 06:03:42 | -68.1 | Dark | Up | 69.0 | 58.5 | Up | 05:55:14 - 06:12:10 | -3009 |
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 8405, (2021/12/15 06:02UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 28.30 29 34Bet Aur 05:59:31.6 +44:56:51 1.9 5.24 53 PPM 048217 05:33:28.7 +42:06:32 6.2 1.10 48 PPM 048329 05:39:08.6 +41:21:29 7.1 0.20 49 PPM 048328 05:39:04.4 +41:31:00 10.0 0.19 49 8405 05:38:09.8 +41:26:27 12.4 48 Positions are for J2000
Event circumstances last updated at 2021/12/07 01:43:58 UT
Marc W. Buie, Southwest Research Institute