Event between (500882) 13JN64 and star GA0740:06725873 with event index number of 1102175
Geocentric closest approach at 2021/05/23 06:50:00 UTC
J2000 position of star is 17:03:18.4 -15:16:15
Equinox of date position of star is 17:04:30.4 -15:17:57
Stellar brightness G=13.0,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 58 degrees from the moon.
Moon is 85% illuminated.
TNO apparent brightness V=24.2
[RECON map]
TNO is 39.0 AU from the Sun
and 38.0 AU from the Earth.
The TNO is moving 23.1
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 801 seconds.
The 1-sigma cross-track error in the shadow position is
3106 km.
The sky-plane scale is
27564.6 km/arcsec.
The TNO has an absolute magnitude Hv=8.3
Diameter=131.8 km assuming a 5% albedo -- 5.7 sec chord
Diameter=53.8 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is 7:3EEEE
Star training set for 500882, (2021/05/23 06:50UT) Object RA Dec mag sep mel Antares 16:30:43.3 -26:28:40 0.9 13.67 53 35Eta Oph 17:11:36.4 -15:45:00 2.6 1.76 60 PPM 232348 16:57:16.1 -16:50:19 6.3 2.33 57 PPM 232423 17:00:11.6 -15:50:36 8.4 1.18 57 PPM 232513 17:04:07.8 -15:10:56 9.5 0.15 58 500882 17:04:31.7 -15:17:59 13.0 59 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
1.1 sigma about the mid-time.
The median site spacing is 18.8 km
RECON observability=0.9 and success probability=0.9%
| 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 | 06:52:01 | -17.8 | AT | Up | 19.0 | 148.3 | Really Low | 06:37:01 - 07:07:01 | 9962 |
| Kelowna | 06:52:01 | -18.2 | Dark | Up | 19.3 | 148.1 | Really Low | 06:37:01 - 07:07:01 | 9938 |
| Peachland | 06:52:02 | -18.2 | Dark | Up | 19.3 | 147.8 | Really Low | 06:37:02 - 07:07:02 | 9927 |
| Summerland | 06:52:03 | -18.4 | Dark | Up | 19.5 | 147.8 | Really Low | 06:37:03 - 07:07:03 | 9920 |
| Penticton | 06:52:03 | -18.5 | Dark | Up | 19.6 | 147.9 | Really Low | 06:37:03 - 07:07:03 | 9918 |
| Oliver | 06:52:03 | -18.8 | Dark | Up | 19.9 | 147.8 | Really Low | 06:37:03 - 07:07:03 | 9898 |
| Anarchist Mountain Observatory | 06:52:03 | -19.0 | Dark | Up | 20.1 | 148.0 | Low | 06:37:03 - 07:07:03 | 9893 |
| Tonasket | 06:52:03 | -19.3 | Dark | Up | 20.3 | 147.9 | Low | 06:37:03 - 07:07:03 | 9873 |
| Okanogan | 06:52:04 | -19.6 | Dark | Up | 20.5 | 147.7 | Low | 06:37:04 - 07:07:04 | 9851 |
| Brewster | 06:52:05 | -19.8 | Dark | Up | 20.7 | 147.4 | Low | 06:37:05 - 07:07:05 | 9832 |
| Manson/Chelan | 06:52:07 | -19.9 | Dark | Up | 20.7 | 147.0 | Low | 06:37:07 - 07:07:07 | 9813 |
| Victoria | 06:52:13 | -18.7 | Dark | Up | 19.0 | 144.1 | Really Low | 06:37:13 - 07:07:13 | 9790 |
| Wenatchee | 06:52:07 | -20.4 | Dark | Up | 21.1 | 146.8 | Low | 06:37:07 - 07:07:07 | 9782 |
| Ellensburg | 06:52:08 | -20.7 | Dark | Up | 21.3 | 146.5 | Low | 06:37:08 - 07:07:08 | 9753 |
| Pasco | 06:52:06 | -21.7 | Dark | Up | 22.5 | 147.7 | Low | 06:37:06 - 07:07:06 | 9735 |
| Yakima | 06:52:09 | -21.1 | Dark | Up | 21.7 | 146.4 | Low | 06:37:09 - 07:07:09 | 9728 |
| PNWRO | 06:52:05 | -22.0 | Dark | Up | 22.8 | 147.8 | Low | 06:37:05 - 07:07:05 | 9724 |
| Toppenish/White Swan | 06:52:09 | -21.3 | Dark | Up | 21.9 | 146.5 | Low | 06:37:09 - 07:07:09 | 9718 |
| Goldendale | 06:52:10 | -21.8 | Dark | Up | 22.2 | 146.0 | Low | 06:37:10 - 07:07:10 | 9676 |
| The Dalles | 06:52:13 | -21.9 | Dark | Up | 22.3 | 145.6 | Low | 06:37:13 - 07:07:13 | 9655 |
| Maupin | 06:52:12 | -22.3 | Dark | Up | 22.7 | 145.6 | Low | 06:37:12 - 07:07:12 | 9631 |
| Dunrhomin | 06:51:29 | -29.1 | Dark | Up | 32.3 | 160.5 | Up | 06:36:29 - 07:06:29 | 9606 |
| Redmond | 06:52:14 | -23.2 | Dark | Up | 23.4 | 145.3 | Low | 06:37:14 - 07:07:14 | 9572 |
| Sisters | 06:52:15 | -23.1 | Dark | Up | 23.2 | 144.9 | Low | 06:37:15 - 07:07:15 | 9566 |
| Bend | 06:52:16 | -23.4 | Dark | Up | 23.5 | 145.1 | Low | 06:37:16 - 07:07:16 | 9556 |
| Oregon Observatory | 06:52:15 | -23.5 | Dark | Up | 23.6 | 144.9 | Low | 06:37:15 - 07:07:15 | 9542 |
| La Pine/Gilchrist | 06:52:16 | -23.7 | Dark | Up | 23.7 | 144.8 | Low | 06:37:16 - 07:07:16 | 9527 |
| North Lake | 06:52:15 | -24.2 | Dark | Up | 24.3 | 145.3 | Low | 06:37:15 - 07:07:15 | 9511 |
| Paisley | 06:52:14 | -24.8 | Dark | Up | 24.9 | 145.5 | Low | 06:37:14 - 07:07:14 | 9482 |
| Lakeview | 06:52:14 | -25.4 | Dark | Up | 25.4 | 145.5 | Low | 06:37:14 - 07:07:14 | 9452 |
| Klamath Falls | 06:52:19 | -25.0 | Dark | Up | 24.8 | 144.2 | Low | 06:37:19 - 07:07:19 | 9425 |
| Cedarville | 06:52:15 | -26.0 | Dark | Up | 26.0 | 145.5 | Low | 06:37:15 - 07:07:15 | 9411 |
| Fall River/Burney | 06:52:21 | -26.2 | Dark | Up | 25.9 | 144.2 | Low | 06:37:21 - 07:07:21 | 9352 |
| Susanville | 06:52:19 | -27.0 | Dark | Up | 26.8 | 144.8 | Low | 06:37:19 - 07:07:19 | 9324 |
| Gimple | 06:52:19 | -27.2 | Dark | Up | 26.9 | 144.5 | Low | 06:37:19 - 07:07:19 | 9300 |
| Greenville | 06:52:19 | -27.2 | Dark | Up | 26.8 | 144.4 | Low | 06:37:19 - 07:07:19 | 9298 |
| Portola | 06:52:18 | -27.6 | Dark | Up | 27.3 | 144.7 | Low | 06:37:18 - 07:07:18 | 9285 |
| Quincy | 06:52:20 | -27.4 | Dark | Up | 27.0 | 144.3 | Low | 06:37:20 - 07:07:20 | 9284 |
| Reno | 06:52:17 | -28.0 | Dark | Up | 27.8 | 145.3 | Low | 06:37:17 - 07:07:17 | 9280 |
| Carson City | 06:52:17 | -28.4 | Dark | Up | 28.1 | 145.2 | Low | 06:37:17 - 07:07:17 | 9255 |
| Yerington | 06:52:15 | -28.7 | Dark | Up | 28.6 | 145.8 | Low | 06:37:15 - 07:07:15 | 9255 |
| Gardnerville | 06:52:17 | -28.6 | Dark | Up | 28.4 | 145.2 | Low | 06:37:17 - 07:07:17 | 9239 |
| Hawthorne | 06:52:14 | -29.2 | Dark | Up | 29.2 | 146.1 | Low | 06:37:14 - 07:07:14 | 9232 |
| Tonopah | 06:52:11 | -30.0 | Dark | Up | 30.2 | 147.4 | Up | 06:37:11 - 07:07:11 | 9228 |
| Lee Vining | 06:52:17 | -29.7 | Dark | Up | 29.4 | 145.5 | Low | 06:37:17 - 07:07:17 | 9182 |
| Beatty | 06:52:10 | -31.2 | Dark | Up | 31.3 | 147.5 | Up | 06:37:10 - 07:07:10 | 9153 |
| Bishop | 06:52:14 | -30.4 | Dark | Up | 30.3 | 146.0 | Up | 06:37:14 - 07:07:14 | 9153 |
| Indian Springs | 06:52:08 | -31.7 | Dark | Up | 32.1 | 148.5 | Up | 06:37:08 - 07:07:08 | 9151 |
| Henderson | 06:52:05 | -32.4 | Dark | Up | 32.8 | 149.0 | Up | 06:37:05 - 07:07:05 | 9126 |
| Patrick | 06:52:03 | -33.2 | Dark | Up | 33.8 | 149.9 | Up | 06:37:03 - 07:07:03 | 9102 |
| Kingman/Dolan Springs | 06:52:03 | -33.3 | Dark | Up | 33.9 | 149.7 | Up | 06:37:03 - 07:07:03 | 9082 |
| Laughlin/Bullhead City | 06:52:04 | -33.3 | Dark | Up | 33.7 | 149.1 | Up | 06:37:04 - 07:07:04 | 9069 |
| Mohave Valley | 06:52:04 | -33.5 | Dark | Up | 34.0 | 149.0 | Up | 06:37:04 - 07:07:04 | 9048 |
| Lake Havasu City | 06:52:04 | -34.0 | Dark | Up | 34.4 | 149.1 | Up | 06:37:04 - 07:07:04 | 9023 |
| George/Scottsdale | 06:51:56 | -35.1 | Dark | Up | 36.1 | 151.5 | Up | 06:36:56 - 07:06:56 | 9015 |
| Parker | 06:52:05 | -34.3 | Dark | Up | 34.7 | 149.0 | Up | 06:37:05 - 07:07:05 | 8997 |
| Blythe | 06:52:05 | -34.8 | Dark | Up | 35.1 | 148.5 | Up | 06:37:05 - 07:07:05 | 8950 |
| CPSLO | 06:52:25 | -31.8 | Dark | Up | 30.9 | 143.1 | Up | 06:37:25 - 07:07:25 | 8948 |
| Idyllwild | 06:52:12 | -34.3 | Dark | Up | 34.0 | 146.4 | Up | 06:37:12 - 07:07:12 | 8915 |
| Wildwood | 06:52:19 | -33.5 | Dark | Up | 32.9 | 144.7 | Up | 06:37:19 - 07:07:19 | 8900 |
| Calipatria | 06:52:10 | -35.1 | Dark | Up | 35.1 | 147.4 | Up | 06:37:10 - 07:07:10 | 8892 |
| Yuma | 06:52:07 | -35.7 | Dark | Up | 35.8 | 148.2 | Up | 06:37:07 - 07:07:07 | 8877 |
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 500882, (2021/05/23 06:50UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 13.67 53 35Eta Oph 17:10:22.7 -15:43:29 2.6 1.76 60 PPM 232348 16:56:02.0 -16:48:22 6.3 2.33 57 PPM 232423 16:58:58.0 -15:48:44 8.4 1.18 57 PPM 232513 17:02:54.5 -15:09:11 9.5 0.15 58 500882 17:03:18.4 -15:16:15 13.0 58 Positions are for J2000
Event circumstances last updated at 2021/01/02 19:54:21 UT
Marc W. Buie, Southwest Research Institute