Event between (523790) 15HP9 and star GA0680:29683671 with event index number of 2606085
Geocentric closest approach at 2027/07/30 04:36:44 UTC
J2000 position of star is 18:36:25.8 -21:03:29
Equinox of date position of star is 18:37:53.5 -21:02:10
Stellar brightness G=15.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 162 degrees from the moon.
Moon is 15% illuminated.
Apparent brightness V=23.1
[RECON map]
Object is 18.0 AU from the Sun
and 17.1 AU from the Earth.
Apparent velocity is 19.0
km/sec on the sky relative to the star, or,
5.5 arcsec/hr.
The 1-sigma error in the time of the event is 379 seconds.
The 1-sigma cross-track error in the shadow position is
839 km.
The sky-plane scale is
12375.0 km/arcsec.
The object has an absolute magnitude Hv=10.5
Diameter=50.1 km assuming a 5% albedo -- 2.5 sec chord
Diameter=20.5 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 523790, (2027/07/30 04:37UT) Object RA Dec mag sep mel Antares 16:31:06.2 -26:29:27 0.9 29.48 168 Nunki 18:56:58.4 -26:15:35 2.0 6.78 159 PPM 268697 18:40:32.1 -21:01:35 6.1 0.57 161 PPM 268618 18:37:00.0 -20:48:59 7.1 0.33 162 PPM 268656 18:38:38.2 -21:01:16 9.5 0.13 162 523790 18:38:04.6 -21:02:00 15.4 162 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
2.4 sigma about the mid-time.
The median site spacing is 27.1 km
RECON observability=0.3 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) |
| Sleaford | 04:36:42 | -11.9 | NT | Down | 16.5 | 172.0 | Really Low | 04:21:42 - 04:51:42 | 5135 |
| Kamloops | 04:37:34 | -6.8 | NT | Down | 15.6 | 158.3 | Really Low | 04:22:34 - 04:52:34 | 5095 |
| Kelowna | 04:37:31 | -7.8 | NT | Down | 16.5 | 159.0 | Really Low | 04:22:31 - 04:52:31 | 5070 |
| Peachland | 04:37:33 | -7.7 | NT | Down | 16.6 | 158.7 | Really Low | 04:22:33 - 04:52:33 | 5065 |
| Summerland | 04:37:33 | -7.9 | NT | Down | 16.7 | 158.8 | Really Low | 04:22:33 - 04:52:33 | 5060 |
| Penticton | 04:37:32 | -7.9 | NT | Down | 16.8 | 158.9 | Really Low | 04:22:32 - 04:52:32 | 5058 |
| Oliver | 04:37:33 | -8.2 | NT | Down | 17.2 | 158.9 | Really Low | 04:22:33 - 04:52:33 | 5045 |
| Anarchist Mountain Observatory | 04:37:33 | -8.4 | NT | Down | 17.4 | 159.0 | Really Low | 04:22:33 - 04:52:33 | 5040 |
| Okanogan | 04:37:35 | -8.7 | NT | Down | 17.9 | 158.7 | Really Low | 04:22:35 - 04:52:35 | 5015 |
| Victoria | 04:37:48 | -6.7 | NT | Down | 16.8 | 155.2 | Really Low | 04:22:48 - 04:52:48 | 5007 |
| Brewster | 04:37:36 | -8.8 | NT | Down | 18.1 | 158.5 | Really Low | 04:22:36 - 04:52:36 | 5004 |
| Manson/Chelan | 04:37:38 | -8.7 | NT | Down | 18.2 | 158.2 | Really Low | 04:22:38 - 04:52:38 | 4995 |
| Wenatchee | 04:37:39 | -9.0 | NT | Down | 18.6 | 157.9 | Really Low | 04:22:39 - 04:52:39 | 4976 |
| Ellensburg | 04:37:41 | -9.1 | NT | Down | 18.9 | 157.7 | Really Low | 04:22:41 - 04:52:41 | 4959 |
| Yakima | 04:37:42 | -9.4 | NT | Down | 19.3 | 157.6 | Really Low | 04:22:42 - 04:52:42 | 4942 |
| Toppenish/White Swan | 04:37:42 | -9.6 | NT | Down | 19.6 | 157.7 | Really Low | 04:22:42 - 04:52:42 | 4934 |
| PNWRO | 04:37:36 | -10.6 | NT | Down | 20.3 | 159.1 | Low | 04:22:36 - 04:52:36 | 4923 |
| The Dalles | 04:37:46 | -9.7 | NT | Down | 20.1 | 156.9 | Low | 04:22:46 - 04:52:46 | 4898 |
| Maupin | 04:37:47 | -10.0 | NT | Down | 20.5 | 156.9 | Low | 04:22:47 - 04:52:47 | 4881 |
| Sisters | 04:37:50 | -10.3 | NT | Down | 21.2 | 156.4 | Low | 04:22:50 - 04:52:50 | 4841 |
| Bend | 04:37:49 | -10.6 | NT | Down | 21.5 | 156.6 | Low | 04:22:49 - 04:52:49 | 4831 |
| Oregon Observatory | 04:37:50 | -10.6 | NT | Down | 21.6 | 156.4 | Low | 04:22:50 - 04:52:50 | 4823 |
| Chiloquin | 04:37:53 | -11.2 | NT | Down | 22.7 | 155.8 | Low | 04:22:53 - 04:52:53 | 4759 |
| Klamath Falls | 04:37:53 | -11.5 | NT | Down | 23.0 | 155.8 | Low | 04:22:53 - 04:52:53 | 4743 |
| Cedarville | 04:37:50 | -12.9 | AT | Down | 24.1 | 157.2 | Low | 04:22:50 - 04:52:50 | 4715 |
| Fall River/Burney | 04:37:53 | -12.5 | AT | Down | 24.2 | 156.0 | Low | 04:22:53 - 04:52:53 | 4686 |
| Gimple | 04:37:53 | -13.3 | AT | Down | 25.2 | 156.3 | Low | 04:22:53 - 04:52:53 | 4641 |
| Greenville | 04:37:53 | -13.3 | AT | Down | 25.2 | 156.3 | Low | 04:22:53 - 04:52:53 | 4641 |
| Dunrhomin | 04:36:49 | -21.6 | Dark | Down | 28.3 | 172.1 | Low | 04:21:49 - 04:51:49 | 4638 |
| Quincy | 04:37:53 | -13.4 | AT | Down | 25.3 | 156.2 | Low | 04:22:53 - 04:52:53 | 4630 |
| Nikitin | 04:36:48 | -21.7 | Dark | Down | 28.5 | 172.0 | Low | 04:21:48 - 04:51:48 | 4628 |
| Portola | 04:37:53 | -13.8 | AT | Down | 25.6 | 156.7 | Low | 04:22:53 - 04:52:53 | 4625 |
| CU-SBO | 04:36:49 | -21.7 | Dark | Down | 28.5 | 172.0 | Low | 04:21:49 - 04:51:49 | 4625 |
| Reno | 04:37:51 | -14.3 | AT | Down | 26.0 | 157.2 | Low | 04:22:51 - 04:52:51 | 4613 |
| Carson City | 04:37:52 | -14.6 | AT | Down | 26.4 | 157.2 | Low | 04:22:52 - 04:52:52 | 4594 |
| Yerington | 04:37:50 | -15.1 | AT | Down | 26.8 | 157.8 | Low | 04:22:50 - 04:52:50 | 4585 |
| Gardnerville | 04:37:52 | -14.8 | AT | Down | 26.6 | 157.2 | Low | 04:22:52 - 04:52:52 | 4581 |
| Hawthorne | 04:37:48 | -15.7 | AT | Down | 27.3 | 158.2 | Low | 04:22:48 - 04:52:48 | 4561 |
| Lee Vining | 04:37:52 | -15.8 | AT | Down | 27.7 | 157.6 | Low | 04:22:52 - 04:52:52 | 4530 |
| Bishop | 04:37:49 | -16.6 | AT | Down | 28.5 | 158.2 | Low | 04:22:49 - 04:52:49 | 4497 |
| Beatty | 04:37:43 | -17.9 | AT | Down | 29.4 | 159.8 | Low | 04:22:43 - 04:52:43 | 4473 |
| Patrick | 04:37:32 | -20.6 | Dark | Down | 31.5 | 162.4 | Up | 04:22:32 - 04:52:32 | 4388 |
| Laughlin/Bullhead City | 04:37:35 | -20.3 | Dark | Down | 31.6 | 161.7 | Up | 04:22:35 - 04:52:35 | 4372 |
| Lake Havasu City | 04:37:35 | -20.9 | Dark | Down | 32.3 | 161.8 | Up | 04:22:35 - 04:52:35 | 4332 |
| Wildwood | 04:37:53 | -18.6 | Dark | Down | 31.5 | 157.3 | Up | 04:22:53 - 04:52:53 | 4302 |
| Idyllwild | 04:37:47 | -20.0 | Dark | Down | 32.4 | 159.2 | Up | 04:22:47 - 04:52:47 | 4284 |
| George/Scottsdale | 04:37:25 | -22.9 | Dark | Down | 33.6 | 164.3 | Up | 04:22:25 - 04:52:25 | 4282 |
| Calipatria | 04:37:42 | -21.1 | Dark | Down | 33.3 | 160.3 | Up | 04:22:42 - 04:52:42 | 4245 |
| Yuma | 04:37:39 | -21.9 | Dark | Down | 33.9 | 161.1 | Up | 04:22:39 - 04:52:39 | 4218 |
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 523790, (2027/07/30 04:37UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 29.48 168 Nunki 18:55:15.9 -26:17:49 2.0 6.78 159 PPM 268697 18:38:53.3 -21:03:10 6.1 0.57 161 PPM 268618 18:35:21.4 -20:50:26 7.1 0.33 162 PPM 268656 18:36:59.5 -21:02:47 9.5 0.13 162 523790 18:36:25.8 -21:03:29 15.4 162 Positions are for J2000
Event circumstances last updated at 2024/06/22 21:27:43 UT
Marc W. Buie, Southwest Research Institute