Event between (127546) 02XU93 and star GA1580:02503574 with event index number of 1002980
Geocentric closest approach at 2020/12/07 08:45:00 UTC
J2000 position of star is 15:25:07.7 +69:38:17
Equinox of date position of star is 15:25:13.3 +69:33:54
Stellar brightness G=16.8,
use SENSEUP=128
Star is 70 degrees from the moon.
Moon is 57% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 25.0 AU from the Sun
and 24.9 AU from the Earth.
The TNO is moving 31.7
km/sec on the sky relative to the star, or,
6.3 arcsec/hr.
The 1-sigma error in the time of the event is 115 seconds.
The 1-sigma cross-track error in the shadow position is
3939 km.
The sky-plane scale is
18060.9 km/arcsec.
The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 4.8 sec chord
Diameter=61.8 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
Star training set for 127546, (2020/12/07 08:45UT) Object RA Dec mag sep mel Vega 18:37:38.9 +38:48:15 0.0 39.74 102 Kochab 14:50:40.0 +74:04:12 2.1 5.24 69 PPM 019362 15:15:01.5 +68:52:09 6.5 1.14 69 PPM 019377 15:17:46.4 +69:04:46 8.2 0.82 70 PPM 019438 15:25:29.3 +69:41:43 9.7 0.13 70 127546 15:25:13.3 +69:33:54 16.8 70 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 7.7 km
RECON observability=0.8 and success probability=3.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| CPSLO | 08:43:57 | -73.4 | Dark | Up | 18.1 | 12.3 | Really Low | 08:33:50 - 08:54:03 | 5304 |
| Wildwood | 08:43:50 | -72.9 | Dark | Up | 17.3 | 12.9 | Really Low | 08:33:44 - 08:53:57 | 5256 |
| Idyllwild | 08:43:44 | -71.9 | Dark | Up | 17.3 | 13.4 | Really Low | 08:33:38 - 08:53:51 | 5189 |
| Quincy | 08:44:01 | -69.9 | Dark | Up | 22.6 | 12.6 | Low | 08:33:55 - 08:54:08 | 5185 |
| Lee Vining | 08:43:56 | -70.6 | Dark | Up | 21.0 | 13.0 | Low | 08:33:49 - 08:54:02 | 5182 |
| Greenville | 08:44:01 | -69.7 | Dark | Up | 22.8 | 12.6 | Low | 08:33:55 - 08:54:08 | 5179 |
| Gimple | 08:44:02 | -69.7 | Dark | Up | 22.8 | 12.6 | Low | 08:33:55 - 08:54:08 | 5176 |
| Gardnerville | 08:43:58 | -70.1 | Dark | Up | 21.8 | 12.9 | Low | 08:33:52 - 08:54:05 | 5176 |
| Portola | 08:44:01 | -69.8 | Dark | Up | 22.6 | 12.7 | Low | 08:33:54 - 08:54:07 | 5174 |
| Bishop | 08:43:53 | -70.6 | Dark | Up | 20.5 | 13.2 | Low | 08:33:46 - 08:53:59 | 5171 |
| Carson City | 08:43:58 | -70.0 | Dark | Up | 22.1 | 12.9 | Low | 08:33:52 - 08:54:05 | 5170 |
| Fall River/Burney | 08:44:04 | -69.1 | Dark | Up | 23.6 | 12.6 | Low | 08:33:58 - 08:54:11 | 5163 |
| Susanville | 08:44:01 | -69.4 | Dark | Up | 23.1 | 12.7 | Low | 08:33:55 - 08:54:08 | 5160 |
| Reno | 08:43:59 | -69.7 | Dark | Up | 22.4 | 12.9 | Low | 08:33:53 - 08:54:06 | 5160 |
| Yerington | 08:43:56 | -69.8 | Dark | Up | 22.0 | 13.1 | Low | 08:33:49 - 08:54:02 | 5154 |
| Calipatria | 08:43:41 | -71.4 | Dark | Up | 16.9 | 13.7 | Really Low | 08:33:35 - 08:53:48 | 5149 |
| Hawthorne | 08:43:55 | -69.9 | Dark | Up | 21.6 | 13.2 | Low | 08:33:48 - 08:54:01 | 5148 |
| Klamath Falls | 08:44:06 | -68.3 | Dark | Up | 24.7 | 12.5 | Low | 08:33:59 - 08:54:12 | 5134 |
| Beatty | 08:43:48 | -70.0 | Dark | Up | 20.4 | 13.7 | Low | 08:33:41 - 08:53:54 | 5120 |
| Yuma | 08:43:38 | -70.9 | Dark | Up | 16.7 | 14.0 | Really Low | 08:33:32 - 08:53:45 | 5117 |
| Tonopah | 08:43:51 | -69.5 | Dark | Up | 21.4 | 13.6 | Low | 08:33:45 - 08:53:58 | 5109 |
| Cedarville | 08:44:02 | -68.2 | Dark | Up | 24.3 | 13.0 | Low | 08:33:55 - 08:54:08 | 5107 |
| Blythe | 08:43:40 | -70.4 | Dark | Up | 17.6 | 14.0 | Really Low | 08:33:33 - 08:53:46 | 5100 |
| Lakeview | 08:44:04 | -67.8 | Dark | Up | 24.9 | 13.0 | Low | 08:33:57 - 08:54:10 | 5090 |
| Indian Springs | 08:43:44 | -69.5 | Dark | Up | 20.3 | 14.0 | Low | 08:33:38 - 08:53:51 | 5085 |
| Paisley | 08:44:04 | -67.4 | Dark | Up | 25.4 | 13.0 | Low | 08:33:57 - 08:54:10 | 5078 |
| Searchlight/Boulder City | 08:43:42 | -69.7 | Dark | Up | 19.3 | 14.1 | Really Low | 08:33:36 - 08:53:49 | 5078 |
| Parker | 08:43:40 | -70.0 | Dark | Up | 18.2 | 14.2 | Really Low | 08:33:33 - 08:53:46 | 5077 |
| Mohave Valley | 08:43:40 | -69.8 | Dark | Up | 18.8 | 14.1 | Really Low | 08:33:33 - 08:53:46 | 5074 |
| Lake Havasu City | 08:43:40 | -69.8 | Dark | Up | 18.5 | 14.2 | Really Low | 08:33:34 - 08:53:47 | 5071 |
| La Pine/Gilchrist | 08:44:08 | -66.9 | Dark | Up | 26.2 | 12.8 | Low | 08:34:01 - 08:54:14 | 5071 |
| North Lake | 08:44:05 | -67.1 | Dark | Up | 25.8 | 12.9 | Low | 08:33:59 - 08:54:12 | 5069 |
| Laughlin/Bullhead City | 08:43:41 | -69.6 | Dark | Up | 19.1 | 14.2 | Really Low | 08:33:34 - 08:53:47 | 5069 |
| Henderson | 08:43:43 | -69.4 | Dark | Up | 19.9 | 14.1 | Really Low | 08:33:37 - 08:53:50 | 5068 |
| Oregon Observatory | 08:44:07 | -66.7 | Dark | Up | 26.4 | 12.8 | Low | 08:34:01 - 08:54:14 | 5061 |
| Bend | 08:44:07 | -66.5 | Dark | Up | 26.6 | 12.9 | Low | 08:34:01 - 08:54:14 | 5051 |
| Sisters | 08:44:09 | -66.4 | Dark | Up | 26.8 | 12.8 | Low | 08:34:02 - 08:54:15 | 5049 |
| Kingman/Dolan Springs | 08:43:39 | -69.3 | Dark | Up | 19.2 | 14.3 | Really Low | 08:33:33 - 08:53:46 | 5046 |
| Redmond | 08:44:07 | -66.3 | Dark | Up | 26.8 | 13.0 | Low | 08:34:01 - 08:54:14 | 5038 |
| Patrick | 08:43:39 | -69.0 | Dark | Up | 19.5 | 14.4 | Really Low | 08:33:33 - 08:53:46 | 5033 |
| DCO | 08:43:38 | -68.7 | Dark | Up | 19.3 | 14.6 | Really Low | 08:33:32 - 08:53:45 | 5009 |
| Maupin | 08:44:08 | -65.4 | Dark | Up | 27.7 | 13.1 | Low | 08:34:02 - 08:54:15 | 4998 |
| The Dalles | 08:44:09 | -65.1 | Dark | Up | 28.1 | 13.1 | Low | 08:34:02 - 08:54:15 | 4984 |
| George/Scottsdale | 08:43:32 | -68.4 | Dark | Up | 18.3 | 14.8 | Really Low | 08:33:26 - 08:53:39 | 4973 |
| Goldendale | 08:44:08 | -64.8 | Dark | Up | 28.4 | 13.3 | Low | 08:34:02 - 08:54:15 | 4964 |
| Toppenish/White Swan | 08:44:09 | -64.1 | Dark | Up | 29.0 | 13.5 | Low | 08:34:02 - 08:54:15 | 4928 |
| Yakima | 08:44:09 | -64.0 | Dark | Up | 29.1 | 13.5 | Low | 08:34:02 - 08:54:15 | 4924 |
| Victoria | 08:44:17 | -63.0 | Dark | Up | 30.6 | 12.7 | Up | 08:34:10 - 08:54:23 | 4915 |
| Ellensburg | 08:44:09 | -63.6 | Dark | Up | 29.5 | 13.5 | Low | 08:34:03 - 08:54:16 | 4906 |
| PNWRO | 08:44:04 | -64.0 | Dark | Up | 28.8 | 14.0 | Low | 08:33:58 - 08:54:11 | 4896 |
| Pasco | 08:44:05 | -63.8 | Dark | Up | 29.1 | 13.9 | Low | 08:33:59 - 08:54:12 | 4893 |
| Wenatchee | 08:44:09 | -63.2 | Dark | Up | 30.0 | 13.7 | Low | 08:34:02 - 08:54:15 | 4881 |
| Entiat | 08:44:10 | -62.9 | Dark | Up | 30.2 | 13.7 | Up | 08:34:03 - 08:54:16 | 4867 |
| Manson/Chelan | 08:44:09 | -62.7 | Dark | Up | 30.5 | 13.8 | Up | 08:34:02 - 08:54:15 | 4855 |
| Brewster | 08:44:10 | -62.4 | Dark | Up | 30.7 | 14.0 | Up | 08:34:03 - 08:54:16 | 4835 |
| Okanogan | 08:44:08 | -62.1 | Dark | Up | 31.0 | 14.1 | Up | 08:34:02 - 08:54:15 | 4816 |
| Tonasket | 08:44:10 | -61.8 | Dark | Up | 31.4 | 14.2 | Up | 08:34:03 - 08:54:16 | 4796 |
| Anarchist Mountain Observatory | 08:44:10 | -61.5 | Dark | Up | 31.7 | 14.2 | Up | 08:34:03 - 08:54:16 | 4781 |
| Oliver | 08:44:10 | -61.4 | Dark | Up | 31.8 | 14.2 | Up | 08:34:04 - 08:54:17 | 4778 |
| Summerland | 08:44:11 | -61.1 | Dark | Up | 32.2 | 14.2 | Up | 08:34:05 - 08:54:18 | 4762 |
| Penticton | 08:44:10 | -61.1 | Dark | Up | 32.2 | 14.3 | Up | 08:34:04 - 08:54:17 | 4762 |
| Peachland | 08:44:12 | -60.9 | Dark | Up | 32.3 | 14.2 | Up | 08:34:05 - 08:54:18 | 4758 |
| Kelowna | 08:44:10 | -60.8 | Dark | Up | 32.5 | 14.3 | Up | 08:34:03 - 08:54:16 | 4744 |
| Clarence Fulton | 08:44:12 | -60.4 | Dark | Up | 32.9 | 14.5 | Up | 08:34:05 - 08:54:18 | 4721 |
| SwRI | 08:43:28 | -60.9 | Dark | Up | 25.8 | 17.4 | Low | 08:33:21 - 08:53:34 | 4524 |
| Niwot | 08:43:28 | -60.8 | Dark | Up | 25.9 | 17.5 | Low | 08:33:21 - 08:53:34 | 4517 |
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 127546, (2020/12/07 08:45UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 39.74 102 Kochab 14:50:42.2 +74:09:20 2.1 5.24 69 PPM 019362 15:14:51.7 +68:56:45 6.5 1.14 69 PPM 019377 15:17:37.7 +69:09:19 8.2 0.82 70 PPM 019438 15:25:24.0 +69:46:05 9.7 0.13 70 127546 15:25:07.7 +69:38:17 16.8 70 Positions are for J2000
Event circumstances last updated at 2020/12/02 11:29:13 UT
Marc W. Buie, Southwest Research Institute