RECON: TNO occultation with 229762

Event between (229762) G!kun||'homdima and star GA0940:00805678 with event index number of 2299510

Geocentric closest approach at 2025/11/28 09:22:15 UTC

J2000 position of star is 05:34:33.2 +05:00:17
Equinox of date position of star is 05:35:50.8 +05:01:09
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 105 degrees from the moon. Moon is 51% illuminated.
Apparent brightness V=19.6

[RECON map]
Object is 40.2 AU from the Sun and 39.3 AU from the Earth.
Apparent velocity is 23.6 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 73 seconds.
The 1-sigma cross-track error in the shadow position is 1472 km.
The sky-plane scale is 28527.6 km/arcsec.

The object has an absolute magnitude Hv=3.5
Diameter=1202.3 km assuming a 5% albedo -- 51.9 sec chord
Diameter=490.8 km assuming a 30% albedo -- 21.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 229762, (2025/11/28 09:23UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:34.5 +07:24:35  0.4  5.66 110
Bellatrix      05:26:31.3 +06:22:16  1.6  2.70 103
PPM 149151     05:36:06.4 +05:40:35  6.4  0.66 105
PPM 149142     05:35:42.4 +04:50:27  8.3  0.19 105
229762         05:35:55.9 +05:01:13 15.4       105
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 31.4 km RECON observability=1.0 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)
Sleaford 09:21:06 -47.9 Dark Down 40.6 204.2 Up 09:14:30 - 09:27:41 7835
Kamloops 09:21:47 -55.6 Dark Down 44.2 185.5 Up 09:15:11 - 09:28:22 7803
Kelowna 09:21:44 -55.8 Dark Down 45.0 186.9 Up 09:15:09 - 09:28:20 7734
Peachland 09:21:45 -56.0 Dark Down 45.1 186.5 Up 09:15:10 - 09:28:21 7727
Summerland 09:21:45 -56.1 Dark Down 45.2 186.6 Up 09:15:09 - 09:28:20 7714
Penticton 09:21:44 -56.1 Dark Down 45.3 186.8 Up 09:15:08 - 09:28:19 7708
Oliver 09:21:44 -56.4 Dark Down 45.6 186.8 Up 09:15:09 - 09:28:20 7680
Anarchist Mountain Observatory 09:21:43 -56.4 Dark Down 45.8 187.1 Up 09:15:08 - 09:28:19 7666
Victoria 09:21:56 -58.5 Dark Down 46.5 181.4 Up 09:15:21 - 09:28:32 7653
Okanogan 09:21:44 -57.0 Dark Down 46.5 186.9 Up 09:15:09 - 09:28:20 7614
Brewster 09:21:45 -57.2 Dark Down 46.7 186.6 Up 09:15:10 - 09:28:21 7594
Manson/Chelan 09:21:46 -57.6 Dark Down 47.0 186.1 Up 09:15:11 - 09:28:22 7579
Wenatchee 09:21:47 -58.0 Dark Down 47.5 185.9 Up 09:15:11 - 09:28:22 7541
Ellensburg 09:21:47 -58.4 Dark Down 47.9 185.6 Up 09:15:12 - 09:28:23 7509
Yakima 09:21:48 -58.7 Dark Down 48.3 185.7 Up 09:15:12 - 09:28:23 7475
Toppenish/White Swan 09:21:47 -58.8 Dark Down 48.5 185.9 Up 09:15:12 - 09:28:23 7456
PNWRO 09:21:42 -58.3 Dark Down 48.7 188.2 Up 09:15:07 - 09:28:18 7415
The Dalles 09:21:50 -59.7 Dark Down 49.3 184.8 Up 09:15:14 - 09:28:25 7396
Maupin 09:21:50 -59.9 Dark Down 49.7 185.0 Up 09:15:14 - 09:28:25 7360
Sisters 09:21:51 -60.8 Dark Down 50.6 184.4 Up 09:15:15 - 09:28:26 7289
Bend 09:21:51 -60.8 Dark Down 50.9 184.8 Up 09:15:15 - 09:28:26 7267
Oregon Observatory 09:21:51 -61.0 Dark Down 51.0 184.6 Up 09:15:15 - 09:28:26 7253
Chiloquin 09:21:53 -62.2 Dark Down 52.4 184.1 Up 09:15:17 - 09:28:28 7141
Klamath Falls 09:21:51 -62.3 Dark Down 52.7 184.2 Up 09:15:16 - 09:28:27 7110
Cedarville 09:21:47 -61.9 Dark Down 53.3 187.0 Up 09:15:11 - 09:28:22 7036
Fall River/Burney 09:21:51 -62.9 Dark Down 53.9 185.0 Up 09:15:16 - 09:28:27 7002
Greenville 09:21:50 -63.2 Dark Down 54.7 185.9 Up 09:15:15 - 09:28:26 6917
Gimple 09:21:50 -63.2 Dark Down 54.7 186.0 Up 09:15:14 - 09:28:25 6916
Quincy 09:21:50 -63.3 Dark Down 54.9 185.9 Up 09:15:15 - 09:28:26 6898
Portola 09:21:49 -63.1 Dark Down 55.0 186.8 Up 09:15:13 - 09:28:24 6883
Reno 09:21:46 -62.9 Dark Down 55.2 187.9 Up 09:15:11 - 09:28:22 6854
Dunrhomin 09:20:55 -52.7 Dark Down 50.8 210.8 Up 09:14:20 - 09:27:31 6823
Carson City 09:21:46 -63.1 Dark Down 55.6 188.0 Up 09:15:11 - 09:28:22 6821
Nikitin 09:20:55 -52.7 Dark Down 51.0 210.9 Up 09:14:19 - 09:27:30 6806
CU-SBO 09:20:56 -52.8 Dark Down 51.1 210.9 Up 09:14:20 - 09:27:31 6801
Yerington 09:21:44 -62.8 Dark Down 55.7 189.2 Up 09:15:09 - 09:28:20 6798
Gardnerville 09:21:45 -63.2 Dark Down 55.8 188.1 Up 09:15:10 - 09:28:21 6798
Hawthorne 09:21:41 -62.7 Dark Down 56.1 190.2 Up 09:15:06 - 09:28:17 6751
Lee Vining 09:21:44 -63.3 Dark Down 56.7 189.5 Up 09:15:08 - 09:28:19 6703
Bishop 09:21:41 -63.1 Dark Down 57.2 190.9 Up 09:15:06 - 09:28:17 6641
Beatty 09:21:35 -62.2 Dark Down 57.4 194.0 Up 09:14:59 - 09:28:10 6584
Patrick 09:21:24 -60.7 Dark Down 58.1 199.9 Up 09:14:49 - 09:28:00 6421
Laughlin/Bullhead City 09:21:27 -61.3 Dark Down 58.5 198.7 Up 09:14:52 - 09:28:03 6402
Lake Havasu City 09:21:26 -61.3 Dark Down 59.1 199.6 Up 09:14:50 - 09:28:01 6335
Wildwood 09:21:42 -64.7 Dark Down 60.4 191.6 Up 09:15:07 - 09:28:18 6330
Idyllwild 09:21:35 -63.4 Dark Down 60.4 195.4 Up 09:15:00 - 09:28:11 6280
George/Scottsdale 09:21:17 -59.7 Dark Down 59.1 204.5 Up 09:14:41 - 09:27:52 6242
Calipatria 09:21:31 -62.7 Dark Down 60.7 198.0 Up 09:14:55 - 09:28:06 6211
Yuma 09:21:27 -62.1 Dark Down 60.9 200.0 Up 09:14:52 - 09:28:03 6161

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 229762, (2025/11/28 09:23UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  5.66 110
Bellatrix      05:25:07.8 +06:20:58  1.6  2.70 103
PPM 149151     05:34:43.3 +05:39:40  6.4  0.66 105
PPM 149142     05:34:19.8 +04:49:30  8.3  0.19 105
229762         05:34:33.2 +05:00:17 15.4       105
Positions are for J2000

Event circumstances last updated at 2024/04/18 03:41:36 UT

Marc W. Buie, Southwest Research Institute

RECON