Event between 99RJ215 and star GA1180:00171936 with event index number of 2585309
Geocentric closest approach at 2021/11/08 12:11:07 UTC
J2000 position of star is 01:10:01.9 +28:27:55
Equinox of date position of star is 01:11:13.3 +28:34:49
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 110 degrees from the moon.
Moon is 18% illuminated.
TNO apparent brightness V=22.9
[RECON map]
TNO is 36.1 AU from the Sun
and 35.2 AU from the Earth.
The TNO is moving 22.7
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 174 seconds.
The 1-sigma cross-track error in the shadow position is
3060 km.
The sky-plane scale is
25544.9 km/arcsec.
The TNO has an absolute magnitude Hv=7.3
Diameter=205.1 km assuming a 5% albedo -- 9.0 sec chord
Diameter=83.7 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is SCATNEAR
Star training set for 99RJ215, (2021/11/08 12:11UT) Object RA Dec mag sep mel Aldebaran 04:37:10.6 +16:33:05 0.8 48.67 152 6Bet Ari 01:55:51.1 +20:54:50 2.6 12.69 117 83Tau Psc 01:12:52.2 +30:12:18 4.5 1.66 111 PPM 090504 01:09:27.2 +28:59:01 7.1 0.56 110 PPM 090537 01:11:36.7 +28:35:33 9.9 0.08 110 99RJ215 01:11:13.9 +28:34:52 16.8 111 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
5.2 sigma about the mid-time.
The median site spacing is 0.0 km
RECON observability=0.0 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) |
| Clarence Fulton | 12:06:55 | -27.7 | Dark | Down | 19.8 | 291.1 | Really Low | 11:51:55 - 12:21:55 | -1012 |
| Kelowna | 12:06:55 | -27.9 | Dark | Down | 19.8 | 291.1 | Really Low | 11:51:55 - 12:21:55 | -1054 |
| Peachland | 12:06:55 | -28.1 | Dark | Down | 19.9 | 290.9 | Really Low | 11:51:55 - 12:21:55 | -1074 |
| Summerland | 12:06:54 | -28.1 | Dark | Down | 19.8 | 291.0 | Really Low | 11:51:54 - 12:21:54 | -1086 |
| Penticton | 12:06:54 | -28.0 | Dark | Down | 19.7 | 291.1 | Really Low | 11:51:54 - 12:21:54 | -1089 |
| Oliver | 12:06:53 | -28.0 | Dark | Down | 19.6 | 291.2 | Really Low | 11:51:53 - 12:21:53 | -1123 |
| Anarchist Mountain Observatory | 12:06:53 | -27.9 | Dark | Down | 19.4 | 291.4 | Really Low | 11:51:53 - 12:21:53 | -1133 |
| Tonasket | 12:06:52 | -28.0 | Dark | Down | 19.3 | 291.5 | Really Low | 11:51:52 - 12:21:52 | -1165 |
| Okanogan | 12:06:52 | -28.1 | Dark | Down | 19.3 | 291.5 | Really Low | 11:51:52 - 12:21:52 | -1203 |
| Brewster | 12:06:52 | -28.3 | Dark | Down | 19.3 | 291.4 | Really Low | 11:51:52 - 12:21:52 | -1235 |
| Manson/Chelan | 12:06:52 | -28.6 | Dark | Down | 19.5 | 291.3 | Really Low | 11:51:52 - 12:21:52 | -1268 |
| Victoria | 12:06:55 | -30.6 | Dark | Down | 21.7 | 288.9 | Low | 11:51:55 - 12:21:55 | -1305 |
| Wenatchee | 12:06:51 | -28.7 | Dark | Down | 19.4 | 291.3 | Really Low | 11:51:51 - 12:21:51 | -1319 |
| Ellensburg | 12:06:50 | -28.9 | Dark | Down | 19.4 | 291.3 | Really Low | 11:51:50 - 12:21:50 | -1367 |
| Pasco | 12:06:48 | -28.1 | Dark | Down | 18.2 | 292.4 | Really Low | 11:51:48 - 12:21:48 | -1393 |
| Dunrhomin | 12:06:36 | -17.8 | AT | Down | 6.5 | 302.1 | Really Low | 11:51:36 - 12:21:36 | -1404 |
| Yakima | 12:06:50 | -29.0 | Dark | Down | 19.3 | 291.4 | Really Low | 11:51:50 - 12:21:50 | -1407 |
| PNWRO | 12:06:48 | -27.9 | Dark | Down | 18.0 | 292.7 | Really Low | 11:51:48 - 12:21:48 | -1410 |
| Toppenish/White Swan | 12:06:49 | -28.9 | Dark | Down | 19.1 | 291.6 | Really Low | 11:51:49 - 12:21:49 | -1423 |
| Goldendale | 12:06:49 | -29.3 | Dark | Down | 19.2 | 291.5 | Really Low | 11:51:49 - 12:21:49 | -1492 |
| The Dalles | 12:06:49 | -29.5 | Dark | Down | 19.3 | 291.3 | Really Low | 11:51:49 - 12:21:49 | -1526 |
| Maupin | 12:06:48 | -29.5 | Dark | Down | 19.1 | 291.5 | Really Low | 11:51:48 - 12:21:48 | -1564 |
| Redmond | 12:06:47 | -29.7 | Dark | Down | 18.8 | 291.8 | Really Low | 11:51:47 - 12:21:47 | -1657 |
| Sisters | 12:06:47 | -30.0 | Dark | Down | 19.1 | 291.5 | Really Low | 11:51:47 - 12:21:47 | -1668 |
| Bend | 12:06:47 | -29.8 | Dark | Down | 18.8 | 291.8 | Really Low | 11:51:47 - 12:21:47 | -1683 |
| Oregon Observatory | 12:06:47 | -29.9 | Dark | Down | 18.9 | 291.7 | Really Low | 11:51:47 - 12:21:47 | -1704 |
| La Pine/Gilchrist | 12:06:46 | -30.0 | Dark | Down | 18.8 | 291.8 | Really Low | 11:51:46 - 12:21:46 | -1727 |
| North Lake | 12:06:45 | -29.6 | Dark | Down | 18.3 | 292.3 | Really Low | 11:51:45 - 12:21:45 | -1750 |
| Paisley | 12:06:45 | -29.3 | Dark | Down | 17.8 | 292.6 | Really Low | 11:51:45 - 12:21:45 | -1792 |
| Lakeview | 12:06:44 | -29.2 | Dark | Down | 17.5 | 292.9 | Really Low | 11:51:44 - 12:21:44 | -1836 |
| Chiloquin | 12:06:45 | -30.3 | Dark | Down | 18.7 | 291.9 | Really Low | 11:51:45 - 12:21:45 | -1850 |
| Klamath Falls | 12:06:45 | -30.3 | Dark | Down | 18.5 | 292.0 | Really Low | 11:51:45 - 12:21:45 | -1882 |
| Cedarville | 12:06:43 | -29.2 | Dark | Down | 17.1 | 293.2 | Really Low | 11:51:43 - 12:21:43 | -1896 |
| Fall River/Burney | 12:06:43 | -30.1 | Dark | Down | 17.8 | 292.6 | Really Low | 11:51:43 - 12:21:43 | -1987 |
| Susanville | 12:06:42 | -29.6 | Dark | Down | 17.0 | 293.2 | Really Low | 11:51:42 - 12:21:42 | -2024 |
| Gimple | 12:06:42 | -29.8 | Dark | Down | 17.0 | 293.2 | Really Low | 11:51:42 - 12:21:42 | -2059 |
| Greenville | 12:06:42 | -29.8 | Dark | Down | 17.1 | 293.1 | Really Low | 11:51:42 - 12:21:42 | -2062 |
| Portola | 12:06:41 | -29.5 | Dark | Down | 16.6 | 293.5 | Really Low | 11:51:41 - 12:21:41 | -2078 |
| Reno | 12:06:41 | -29.0 | Dark | Down | 16.1 | 293.9 | Really Low | 11:51:41 - 12:21:41 | -2081 |
| Quincy | 12:06:41 | -29.8 | Dark | Down | 17.0 | 293.2 | Really Low | 11:51:41 - 12:21:41 | -2082 |
| Yerington | 12:06:40 | -28.5 | Dark | Down | 15.4 | 294.4 | Really Low | 11:51:40 - 12:21:40 | -2112 |
| Carson City | 12:06:40 | -29.0 | Dark | Down | 15.9 | 294.0 | Really Low | 11:51:40 - 12:21:40 | -2116 |
| Tonopah | 12:06:37 | -27.0 | Dark | Down | 13.6 | 295.7 | Really Low | 11:51:37 - 12:21:37 | -2129 |
| Hawthorne | 12:06:39 | -28.1 | Dark | Down | 14.8 | 294.8 | Really Low | 11:51:39 - 12:21:39 | -2138 |
| Gardnerville | 12:06:40 | -28.9 | Dark | Down | 15.8 | 294.1 | Really Low | 11:51:40 - 12:21:40 | -2139 |
| Lee Vining | 12:06:39 | -28.5 | Dark | Down | 14.9 | 294.7 | Really Low | 11:51:39 - 12:21:39 | -2213 |
| Indian Springs | 12:06:35 | -25.7 | Dark | Down | 11.9 | 296.8 | Really Low | 11:51:35 - 12:21:35 | -2213 |
| Beatty | 12:06:36 | -26.6 | Dark | Down | 12.8 | 296.1 | Really Low | 11:51:36 - 12:21:36 | -2225 |
| Henderson | 12:06:34 | -25.1 | Dark | Down | 11.1 | 297.2 | Really Low | 11:51:34 - 12:21:34 | -2237 |
| Bishop | 12:06:37 | -27.9 | Dark | Down | 14.2 | 295.2 | Really Low | 11:51:37 - 12:21:37 | -2244 |
| Patrick | 12:06:33 | -24.2 | Dark | Down | 10.0 | 297.9 | Really Low | 11:51:33 - 12:21:33 | -2250 |
| Kingman/Dolan Springs | 12:06:33 | -24.3 | Dark | Down | 10.1 | 297.8 | Really Low | 11:51:33 - 12:21:33 | -2280 |
| Laughlin/Bullhead City | 12:06:33 | -24.8 | Dark | Down | 10.4 | 297.6 | Really Low | 11:51:33 - 12:21:33 | -2305 |
| George/Scottsdale | 12:06:31 | -22.4 | Dark | Down | 7.8 | 299.2 | Really Low | 11:51:31 - 12:21:31 | -2325 |
| Mohave Valley | 12:06:33 | -24.7 | Dark | Down | 10.3 | 297.6 | Really Low | 11:51:33 - 12:21:33 | -2331 |
| Lake Havasu City | 12:06:33 | -24.5 | Dark | Down | 9.9 | 297.8 | Really Low | 11:51:33 - 12:21:33 | -2359 |
| Parker | 12:06:33 | -24.5 | Dark | Down | 9.8 | 297.9 | Really Low | 11:51:33 - 12:21:33 | -2392 |
| Blythe | 12:06:32 | -24.7 | Dark | Down | 9.7 | 297.8 | Really Low | 11:51:32 - 12:21:32 | -2457 |
| Idyllwild | 12:06:34 | -26.4 | Dark | Down | 11.4 | 296.8 | Really Low | 11:51:34 - 12:21:34 | -2536 |
| CPSLO | 12:06:38 | -29.7 | Dark | Down | 15.0 | 294.5 | Really Low | 11:51:38 - 12:21:38 | -2538 |
| Calipatria | 12:06:33 | -25.4 | Dark | Down | 10.2 | 297.4 | Really Low | 11:51:33 - 12:21:33 | -2546 |
| Yuma | 12:06:32 | -24.6 | Dark | Down | 9.3 | 297.9 | Really Low | 11:51:32 - 12:21:32 | -2549 |
| Wildwood | 12:06:35 | -28.0 | Dark | Down | 12.9 | 295.8 | Really Low | 11:51:35 - 12:21:35 | -2578 |
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 99RJ215, (2021/11/08 12:11UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 48.67 152 6Bet Ari 01:54:38.5 +20:48:26 2.6 12.69 117 83Tau Psc 01:11:39.7 +30:05:22 4.5 1.66 111 PPM 090504 01:08:15.3 +28:52:03 7.1 0.56 110 PPM 090537 01:10:24.6 +28:28:36 9.9 0.08 110 99RJ215 01:10:01.9 +28:27:55 16.8 110 Positions are for J2000
Event circumstances last updated at 2021/09/02 02:10:03 UT
Marc W. Buie, Southwest Research Institute