RECON: TNO occultation with 38628

Event between (38628) Huya and star GA0820:07146620 with event index number of 2433151

Geocentric closest approach at 2027/07/14 05:56:00 UTC

J2000 position of star is 17:56:54.1 -07:43:07
Equinox of date position of star is 17:58:13.8 -07:43:12
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 33 degrees from the moon. Moon is 83% illuminated.
Apparent brightness V=19.5

[RECON map]
Object is 29.5 AU from the Sun and 28.6 AU from the Earth.
Apparent velocity is 21.3 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 90 seconds.
The 1-sigma cross-track error in the shadow position is 1148 km.
The sky-plane scale is 20750.8 km/arcsec.

The object has an absolute magnitude Hv=4.8
Diameter=648.7 km assuming a 5% albedo -- 30.9 sec chord
Diameter=264.8 km assuming a 30% albedo -- 12.6 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 38628, (2027/07/14 05:55UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.0 -26:29:26  0.9 27.96   7
60Bet Oph      17:44:50.0 +04:33:28  2.8 12.74  39
PPM 201153     17:54:07.3 -06:08:53  5.9  1.90  33
PPM 201234     17:58:39.9 -08:04:13  8.2  0.36  33
PPM 201227     17:58:20.4 -07:43:22  9.2  0.01  33
38628          17:58:23.7 -07:43:13 16.5        34
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 0.0 km RECON observability=0.7 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)
Kamloops 05:55:52 -12.0 AT Up 31.1 169.9 Up 05:47:52 - 06:03:52 10916
Kelowna 05:55:50 -13.0 AT Up 32.0 170.8 Up 05:47:50 - 06:03:50 10862
Peachland 05:55:52 -13.0 AT Up 32.1 170.5 Up 05:47:52 - 06:03:52 10858
Sleaford 05:55:06 -14.4 AT Up 30.0 186.3 Up 05:47:06 - 06:03:06 10850
Summerland 05:55:51 -13.2 AT Up 32.3 170.6 Up 05:47:51 - 06:03:51 10849
Penticton 05:55:50 -13.3 AT Up 32.3 170.7 Up 05:47:50 - 06:03:50 10844
Oliver 05:55:51 -13.6 AT Up 32.7 170.6 Up 05:47:51 - 06:03:51 10823
Victoria 05:56:04 -12.8 AT Up 32.8 166.1 Up 05:48:04 - 06:04:04 10820
Anarchist Mountain Observatory 05:55:51 -13.8 AT Up 32.9 170.9 Up 05:47:51 - 06:03:51 10812
Okanogan 05:55:52 -14.3 AT Up 33.5 170.5 Up 05:47:52 - 06:03:52 10775
Brewster 05:55:53 -14.4 AT Up 33.7 170.3 Up 05:47:53 - 06:03:53 10761
Manson/Chelan 05:55:54 -14.5 AT Up 33.9 169.8 Up 05:47:54 - 06:03:54 10752
Wenatchee 05:55:55 -14.8 AT Up 34.3 169.6 Up 05:47:55 - 06:03:55 10725
Ellensburg 05:55:57 -15.1 AT Up 34.7 169.2 Up 05:47:57 - 06:03:57 10702
Yakima 05:55:58 -15.5 AT Up 35.1 169.2 Up 05:47:58 - 06:03:58 10677
Toppenish/White Swan 05:55:57 -15.7 AT Up 35.3 169.3 Up 05:47:57 - 06:03:57 10661
PNWRO 05:55:51 -16.5 AT Up 35.9 171.1 Up 05:47:51 - 06:03:51 10623
The Dalles 05:56:00 -16.1 AT Up 36.0 168.3 Up 05:48:00 - 06:04:00 10620
Maupin 05:56:00 -16.5 AT Up 36.4 168.4 Up 05:48:00 - 06:04:00 10592
Sisters 05:56:03 -17.0 AT Up 37.2 167.6 Up 05:48:03 - 06:04:03 10540
Bend 05:56:03 -17.3 AT Up 37.5 167.9 Up 05:48:03 - 06:04:03 10522
Oregon Observatory 05:56:04 -17.4 AT Up 37.6 167.7 Up 05:48:04 - 06:04:04 10512
Chiloquin 05:56:04 -18.4 Dark Up 38.9 167.0 Up 05:48:04 - 06:04:04 10427
Klamath Falls 05:56:06 -18.7 Dark Up 39.2 167.0 Up 05:48:06 - 06:04:06 10403
Cedarville 05:56:01 -19.9 Dark Up 40.1 168.9 Up 05:48:01 - 06:04:01 10338
Fall River/Burney 05:56:04 -19.8 Dark Up 40.4 167.3 Up 05:48:04 - 06:04:04 10317
Greenville 05:56:06 -20.8 Dark Up 41.4 167.7 Up 05:48:06 - 06:04:06 10247
Gimple 05:56:05 -20.8 Dark Up 41.4 167.8 Up 05:48:05 - 06:04:05 10246
Quincy 05:56:06 -20.9 Dark Up 41.6 167.7 Up 05:48:06 - 06:04:06 10233
Portola 05:56:03 -21.2 Dark Up 41.8 168.3 Up 05:48:03 - 06:04:03 10219
Reno 05:56:02 -21.7 Dark Up 42.1 169.1 Up 05:48:02 - 06:04:02 10192
Carson City 05:56:02 -22.0 Dark Up 42.5 169.0 Up 05:48:02 - 06:04:02 10166
Gardnerville 05:56:02 -22.3 Dark Up 42.7 169.1 Up 05:48:02 - 06:04:02 10147
Yerington 05:56:00 -22.5 Dark Up 42.8 169.8 Up 05:48:00 - 06:04:00 10144
Hawthorne 05:55:58 -23.1 Dark Up 43.3 170.5 Up 05:47:58 - 06:03:58 10104
Lee Vining 05:56:00 -23.4 Dark Up 43.8 169.7 Up 05:48:00 - 06:04:00 10067
Dunrhomin 05:55:04 -25.8 Dark Up 41.7 188.3 Up 05:47:04 - 06:03:04 10062
Nikitin 05:55:05 -26.0 Dark Up 41.9 188.3 Up 05:47:05 - 06:03:05 10049
CU-SBO 05:55:05 -26.1 Dark Up 41.9 188.2 Up 05:47:05 - 06:03:05 10045
Bishop 05:55:59 -24.2 Dark Up 44.5 170.6 Up 05:47:59 - 06:03:59 10013
Beatty 05:55:52 -25.2 Dark Up 45.1 172.8 Up 05:47:52 - 06:03:52 9958
Patrick 05:55:40 -27.6 Dark Up 46.8 176.7 Up 05:47:40 - 06:03:40 9805
Laughlin/Bullhead City 05:55:45 -27.6 Dark Up 47.0 175.7 Up 05:47:45 - 06:03:45 9794
Wildwood 05:56:02 -26.9 Dark Up 47.7 169.8 Up 05:48:02 - 06:04:02 9758
Lake Havasu City 05:55:45 -28.3 Dark Up 47.7 176.0 Up 05:47:45 - 06:03:45 9737
Idyllwild 05:55:54 -28.0 Dark Up 48.3 172.4 Up 05:47:54 - 06:03:54 9707
George/Scottsdale 05:55:34 -29.9 Dark Up 48.6 179.5 Up 05:47:34 - 06:03:34 9641
Calipatria 05:55:50 -29.0 Dark Up 49.0 174.1 Up 05:47:50 - 06:03:50 9641
Yuma 05:55:46 -29.7 Dark Up 49.5 175.4 Up 05:47:46 - 06:03:46 9593

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 38628, (2027/07/14 05:55UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 27.96   7
60Bet Oph      17:43:28.3 +04:34:06  2.8 12.74  39
PPM 201153     17:52:38.7 -06:08:37  5.9  1.90  33
PPM 201234     17:57:10.1 -08:04:08  8.2  0.36  33
PPM 201227     17:56:50.7 -07:43:16  9.2  0.01  33
38628          17:56:54.1 -07:43:07 16.5        33
Positions are for J2000

Event circumstances last updated at 2024/06/22 21:27:09 UT

Marc W. Buie, Southwest Research Institute

RECON