Event between (449097) 12UT68 and star GA1240:03272503 with event index number of 1228181
Geocentric closest approach at 2023/02/28 03:31:05 UTC
J2000 position of star is 08:35:27.6 +35:12:56
Equinox of date position of star is 08:36:41.6 +35:08:51
Stellar brightness G=13.2,
use SENSEUP=32
Star is 45 degrees from the moon.
Moon is 58% illuminated.
TNO apparent brightness V=21.7
[RECON map]
TNO is 15.8 AU from the Sun
and 15.1 AU from the Earth.
The TNO is moving 17.0
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 582 seconds.
The 1-sigma cross-track error in the shadow position is
2134 km.
The sky-plane scale is
10921.2 km/arcsec.
The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 4.3 sec chord
Diameter=29.6 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
Star training set for 449097, (2023/02/28 03:31UT) Object RA Dec mag sep mel Pollux 07:46:44.0 +27:58:06 1.1 12.86 35 33 Lyn 08:36:12.8 +36:20:19 5.9 1.21 45 PPM 073774 08:33:03.2 +34:53:12 7.8 0.83 44 PPM 073842 08:38:09.6 +34:38:31 10.0 0.55 45 PPM 073845 08:38:37.3 +35:07:18 11.1 0.35 45 449097 08:36:55.8 +35:08:04 13.2 45 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
1.5 sigma about the mid-time.
The median site spacing is 22.4 km
RECON observability=1.0 and success probability=20.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 03:33:33 | -19.6 | Dark | Up | 59.4 | 104.4 | Up | 03:18:33 - 03:48:33 | 2900 |
| Summerland | 03:33:35 | -19.4 | Dark | Up | 59.3 | 103.6 | Up | 03:18:35 - 03:48:35 | 2878 |
| Penticton | 03:33:34 | -19.5 | Dark | Up | 59.4 | 103.6 | Up | 03:18:34 - 03:48:34 | 2869 |
| Okanagan Falls | 03:33:35 | -19.5 | Dark | Up | 59.4 | 103.3 | Up | 03:18:35 - 03:48:35 | 2851 |
| Oliver | 03:33:36 | -19.6 | Dark | Up | 59.4 | 103.0 | Up | 03:18:36 - 03:48:36 | 2834 |
| Anarchist Mountain Observatory | 03:33:35 | -19.7 | Dark | Up | 59.6 | 103.0 | Up | 03:18:35 - 03:48:35 | 2812 |
| Oroville | 03:33:36 | -19.7 | Dark | Up | 59.6 | 102.8 | Up | 03:18:36 - 03:48:36 | 2807 |
| Tonasket | 03:33:36 | -19.8 | Dark | Up | 59.6 | 102.4 | Up | 03:18:36 - 03:48:36 | 2784 |
| Okanogan | 03:33:38 | -19.7 | Dark | Up | 59.6 | 101.7 | Up | 03:18:38 - 03:48:38 | 2755 |
| Brewster | 03:33:40 | -19.6 | Dark | Up | 59.5 | 101.0 | Up | 03:18:40 - 03:48:40 | 2733 |
| Manson/Chelan | 03:33:41 | -19.4 | Dark | Up | 59.3 | 100.3 | Up | 03:18:41 - 03:48:41 | 2722 |
| Entiat | 03:33:42 | -19.4 | Dark | Up | 59.3 | 99.9 | Up | 03:18:42 - 03:48:42 | 2703 |
| Wenatchee | 03:33:43 | -19.4 | Dark | Up | 59.3 | 99.4 | Up | 03:18:43 - 03:48:43 | 2680 |
| Ellensburg | 03:33:45 | -19.3 | Dark | Up | 59.2 | 98.5 | Up | 03:18:45 - 03:48:45 | 2645 |
| Yakima | 03:33:47 | -19.4 | Dark | Up | 59.3 | 97.8 | Up | 03:18:47 - 03:48:47 | 2606 |
| Toppenish/White Swan | 03:33:47 | -19.5 | Dark | Up | 59.4 | 97.6 | Up | 03:18:47 - 03:48:47 | 2579 |
| Goldendale | 03:33:50 | -19.3 | Dark | Up | 59.2 | 96.3 | Up | 03:18:50 - 03:48:50 | 2536 |
| Pasco | 03:33:42 | -20.4 | Dark | Up | 60.3 | 98.5 | Up | 03:18:42 - 03:48:42 | 2533 |
| The Dalles | 03:33:52 | -19.1 | Dark | Up | 59.0 | 95.7 | Up | 03:18:52 - 03:48:52 | 2524 |
| George/Umatilla | 03:33:44 | -20.3 | Dark | Up | 60.2 | 97.8 | Up | 03:18:44 - 03:48:44 | 2506 |
| PNWRO | 03:33:42 | -20.6 | Dark | Up | 60.5 | 98.3 | Up | 03:18:42 - 03:48:42 | 2502 |
| Maupin | 03:33:52 | -19.3 | Dark | Up | 59.1 | 95.1 | Up | 03:18:52 - 03:48:52 | 2480 |
| Madras/Culver | 03:33:54 | -19.3 | Dark | Up | 59.1 | 94.1 | Up | 03:18:54 - 03:48:54 | 2426 |
| Sisters | 03:33:57 | -19.0 | Dark | Up | 58.8 | 93.2 | Up | 03:18:57 - 03:48:57 | 2406 |
| Redmond | 03:33:55 | -19.3 | Dark | Up | 59.1 | 93.5 | Up | 03:18:55 - 03:48:55 | 2392 |
| Bend | 03:33:56 | -19.3 | Dark | Up | 59.0 | 93.0 | Up | 03:18:56 - 03:48:56 | 2375 |
| Oregon Observatory | 03:33:57 | -19.2 | Dark | Up | 58.9 | 92.6 | Up | 03:18:57 - 03:48:57 | 2361 |
| La Pine/Gilchrist | 03:33:58 | -19.2 | Dark | Up | 58.9 | 92.3 | Up | 03:18:58 - 03:48:58 | 2343 |
| North Lake | 03:33:57 | -19.7 | Dark | Up | 59.4 | 92.0 | Up | 03:18:57 - 03:48:57 | 2281 |
| Chiloquin | 03:34:03 | -19.1 | Dark | Up | 58.7 | 90.2 | Up | 03:19:03 - 03:49:03 | 2242 |
| Paisley | 03:33:57 | -20.0 | Dark | Up | 59.6 | 91.3 | Up | 03:18:57 - 03:48:57 | 2215 |
| Klamath Falls | 03:34:03 | -19.2 | Dark | Up | 58.7 | 89.7 | Up | 03:19:03 - 03:49:03 | 2205 |
| Tulelake | 03:34:03 | -19.4 | Dark | Up | 59.0 | 89.4 | Up | 03:19:03 - 03:49:03 | 2169 |
| Lakeview | 03:33:58 | -20.2 | Dark | Up | 59.8 | 90.6 | Up | 03:18:58 - 03:48:58 | 2158 |
| Cedarville | 03:33:59 | -20.4 | Dark | Up | 59.9 | 89.6 | Up | 03:18:59 - 03:48:59 | 2087 |
| Fall River/Burney | 03:34:05 | -19.6 | Dark | Up | 59.0 | 88.0 | Up | 03:19:05 - 03:49:05 | 2074 |
| Susanville | 03:34:04 | -20.2 | Dark | Up | 59.5 | 87.4 | Up | 03:19:04 - 03:49:04 | 1988 |
| Greenville | 03:34:06 | -20.0 | Dark | Up | 59.3 | 86.7 | Up | 03:19:06 - 03:49:06 | 1969 |
| Gimple | 03:34:05 | -20.1 | Dark | Up | 59.4 | 86.8 | Up | 03:19:05 - 03:49:05 | 1966 |
| Quincy | 03:34:06 | -20.1 | Dark | Up | 59.3 | 86.4 | Up | 03:19:06 - 03:49:06 | 1948 |
| Portola | 03:34:05 | -20.4 | Dark | Up | 59.7 | 86.4 | Up | 03:19:05 - 03:49:05 | 1921 |
| Reno | 03:34:03 | -21.0 | Dark | Up | 60.1 | 86.3 | Up | 03:19:03 - 03:49:03 | 1874 |
| Carson City | 03:34:04 | -21.0 | Dark | Up | 60.1 | 85.7 | Up | 03:19:04 - 03:49:04 | 1836 |
| Gardnerville | 03:34:04 | -21.1 | Dark | Up | 60.1 | 85.3 | Up | 03:19:04 - 03:49:04 | 1810 |
| Yerington | 03:34:02 | -21.5 | Dark | Up | 60.6 | 85.7 | Up | 03:19:02 - 03:49:02 | 1797 |
| Hawthorne | 03:34:00 | -22.0 | Dark | Up | 61.0 | 85.2 | Up | 03:19:00 - 03:49:00 | 1734 |
| Lee Vining | 03:34:04 | -21.7 | Dark | Up | 60.5 | 83.9 | Up | 03:19:04 - 03:49:04 | 1690 |
| Tonopah | 03:33:56 | -23.1 | Dark | Up | 62.0 | 85.0 | Up | 03:18:56 - 03:48:56 | 1644 |
| Bishop | 03:34:02 | -22.3 | Dark | Up | 61.0 | 83.2 | Up | 03:19:02 - 03:49:02 | 1607 |
| Niwot | 03:32:59 | -31.6 | Dark | Up | 71.1 | 97.7 | Up | 03:17:59 - 03:47:59 | 1570 |
| SwRI | 03:33:00 | -31.6 | Dark | Up | 71.1 | 97.3 | Up | 03:18:00 - 03:48:00 | 1561 |
| Lone Pine | 03:34:03 | -22.7 | Dark | Up | 61.2 | 82.0 | Up | 03:19:03 - 03:49:03 | 1518 |
| Beatty | 03:33:56 | -23.7 | Dark | Up | 62.3 | 83.0 | Up | 03:18:56 - 03:48:56 | 1510 |
| CPSLO | 03:34:16 | -20.8 | Dark | Up | 59.0 | 78.8 | Up | 03:19:16 - 03:49:16 | 1464 |
| Indian Springs | 03:33:53 | -24.5 | Dark | Up | 63.1 | 82.8 | Up | 03:18:53 - 03:48:53 | 1445 |
| Henderson | 03:33:51 | -25.2 | Dark | Up | 63.5 | 82.0 | Up | 03:18:51 - 03:48:51 | 1370 |
| Searchlight/Boulder City | 03:33:52 | -25.3 | Dark | Up | 63.5 | 80.9 | Up | 03:18:52 - 03:48:52 | 1308 |
| Wildwood | 03:34:10 | -22.5 | Dark | Up | 60.4 | 77.4 | Up | 03:19:10 - 03:49:10 | 1273 |
| Patrick | 03:33:47 | -26.2 | Dark | Up | 64.3 | 81.1 | Up | 03:18:47 - 03:48:47 | 1273 |
| Laughlin/Bullhead City | 03:33:51 | -25.6 | Dark | Up | 63.7 | 80.4 | Up | 03:18:51 - 03:48:51 | 1267 |
| Kingman/Dolan Springs | 03:33:48 | -26.0 | Dark | Up | 64.2 | 80.6 | Up | 03:18:48 - 03:48:48 | 1255 |
| Mohave Valley | 03:33:51 | -25.7 | Dark | Up | 63.7 | 79.9 | Up | 03:18:51 - 03:48:51 | 1238 |
| DCO | 03:33:44 | -26.8 | Dark | Up | 64.9 | 80.7 | Up | 03:18:44 - 03:48:44 | 1221 |
| Lake Havasu City | 03:33:51 | -25.9 | Dark | Up | 63.8 | 79.2 | Up | 03:18:51 - 03:48:51 | 1189 |
| Idyllwild | 03:34:03 | -24.1 | Dark | Up | 61.8 | 77.2 | Up | 03:19:03 - 03:49:03 | 1178 |
| Parker | 03:33:51 | -26.0 | Dark | Up | 63.8 | 78.5 | Up | 03:18:51 - 03:48:51 | 1151 |
| Blythe | 03:33:54 | -25.8 | Dark | Up | 63.4 | 77.4 | Up | 03:18:54 - 03:48:54 | 1104 |
| Calipatria | 03:33:59 | -25.2 | Dark | Up | 62.6 | 76.3 | Up | 03:18:59 - 03:48:59 | 1079 |
| Yuma | 03:33:55 | -25.9 | Dark | Up | 63.2 | 75.6 | Up | 03:18:55 - 03:48:55 | 1007 |
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 449097, (2023/02/28 03:31UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 12.86 35 33 Lyn 08:34:43.8 +36:25:10 5.9 1.21 45 PPM 073774 08:31:35.0 +34:57:58 7.8 0.83 44 PPM 073842 08:36:41.8 +34:43:25 10.0 0.55 45 PPM 073845 08:37:09.3 +35:12:13 11.1 0.35 45 449097 08:35:27.6 +35:12:56 13.2 45 Positions are for J2000
Event circumstances last updated at 2019/06/08 04:47:40 UT
Marc W. Buie, Southwest Research Institute