RECON: TNO occultation with 11HN104

Event between 11HN104 and star GA0820:07231342 with event index number of 2119230

Geocentric closest approach at 2024/06/19 07:02:12 UTC

J2000 position of star is 17:58:19.1 -06:11:50
Equinox of date position of star is 17:59:35.9 -06:11:52
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 40 degrees from the moon. Moon is 92% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 30.7 AU from the Sun and 29.7 AU from the Earth.
Apparent velocity is 23.5 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 259 seconds.
The 1-sigma cross-track error in the shadow position is 1238 km.
The sky-plane scale is 21537.7 km/arcsec.

The object has an absolute magnitude Hv=8.0
Diameter=149.3 km assuming a 5% albedo -- 6.4 sec chord
Diameter=60.9 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 11HN104, (2024/06/19 07:02UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.7 -26:29:03  0.9 29.29  15
60Bet Oph      17:44:40.9 +04:33:32  2.8 11.39  43
PPM 201153     17:53:57.5 -06:08:51  5.9  1.41  39
PPM 201272     18:00:41.5 -06:06:39  7.8  0.28  40
PPM 201255     18:00:02.6 -06:14:21  9.3  0.11  40
11HN104        17:59:37.9 -06:11:52 16.6        40
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 3.5 sigma about the mid-time.
The median site spacing is 25.1 km RECON observability=1.0 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:02:16 -14.5 AT Up 31.7 177.7 Up 06:47:16 - 07:17:16 4168
Kamloops 07:02:58 -14.7 AT Up 31.4 161.0 Up 06:47:58 - 07:17:58 4078
Kelowna 07:02:57 -15.6 AT Up 32.4 161.9 Up 06:47:57 - 07:17:57 4029
Peachland 07:02:57 -15.7 AT Up 32.4 161.5 Up 06:47:57 - 07:17:57 4022
Summerland 07:02:57 -15.9 AT Up 32.6 161.6 Up 06:47:57 - 07:17:57 4013
Penticton 07:02:57 -16.0 AT Up 32.7 161.7 Up 06:47:57 - 07:17:57 4009
Oliver 07:02:57 -16.3 AT Up 33.0 161.7 Up 06:47:57 - 07:17:57 3986
Anarchist Mountain Observatory 07:02:57 -16.5 AT Up 33.2 161.8 Up 06:47:57 - 07:17:57 3976
Victoria 07:03:09 -16.3 AT Up 32.7 157.1 Up 06:48:09 - 07:18:09 3938
Okanogan 07:02:58 -17.1 AT Up 33.8 161.5 Up 06:47:58 - 07:17:58 3934
Brewster 07:02:59 -17.3 AT Up 34.0 161.2 Up 06:47:59 - 07:17:59 3916
Manson/Chelan 07:03:00 -17.5 AT Up 34.1 160.7 Up 06:48:00 - 07:18:00 3902
Wenatchee 07:03:01 -17.9 AT Up 34.5 160.4 Up 06:48:01 - 07:18:01 3871
Ellensburg 07:03:02 -18.3 Dark Up 34.9 160.0 Up 06:48:02 - 07:18:02 3843
Yakima 07:03:02 -18.6 Dark Up 35.2 159.9 Up 06:48:02 - 07:18:02 3816
Toppenish/White Swan 07:03:02 -18.9 Dark Up 35.5 160.1 Up 06:48:02 - 07:18:02 3801
PNWRO 07:02:58 -19.5 Dark Up 36.2 161.8 Up 06:47:58 - 07:17:58 3779
The Dalles 07:03:05 -19.5 Dark Up 36.0 158.9 Up 06:48:05 - 07:18:05 3747
Maupin 07:03:06 -19.9 Dark Up 36.4 159.0 Up 06:48:06 - 07:18:06 3718
Sisters 07:03:08 -20.7 Dark Up 37.1 158.1 Up 06:48:08 - 07:18:08 3656
Bend 07:03:08 -21.0 Dark Up 37.4 158.4 Up 06:48:08 - 07:18:08 3640
Oregon Observatory 07:03:08 -21.1 Dark Up 37.6 158.2 Up 06:48:08 - 07:18:08 3628
Chiloquin 07:03:11 -22.3 Dark Up 38.7 157.3 Up 06:48:11 - 07:18:11 3532
Klamath Falls 07:03:11 -22.6 Dark Up 39.0 157.3 Up 06:48:11 - 07:18:11 3506
Cedarville 07:03:07 -23.6 Dark Up 40.1 159.0 Up 06:48:07 - 07:18:07 3457
Fall River/Burney 07:03:11 -23.8 Dark Up 40.2 157.4 Up 06:48:11 - 07:18:11 3419
Dunrhomin 07:02:15 -26.3 Dark Up 43.5 178.4 Up 06:47:15 - 07:17:15 3367
Nikitin 07:02:15 -26.5 Dark Up 43.7 178.3 Up 06:47:15 - 07:17:15 3353
Greenville 07:03:10 -24.8 Dark Up 41.2 157.6 Up 06:48:10 - 07:18:10 3351
Gimple 07:03:10 -24.8 Dark Up 41.2 157.8 Up 06:48:10 - 07:18:10 3351
CU-SBO 07:02:15 -26.6 Dark Up 43.8 178.2 Up 06:47:15 - 07:17:15 3348
Quincy 07:03:11 -25.0 Dark Up 41.4 157.6 Up 06:48:11 - 07:18:11 3335
Portola 07:03:08 -25.2 Dark Up 41.6 158.1 Up 06:48:08 - 07:18:08 3327
Reno 07:03:07 -25.6 Dark Up 42.0 158.9 Up 06:48:07 - 07:18:07 3307
Carson City 07:03:07 -26.0 Dark Up 42.4 158.8 Up 06:48:07 - 07:18:07 3279
Yerington 07:03:05 -26.3 Dark Up 42.7 159.5 Up 06:48:05 - 07:18:05 3265
Gardnerville 07:03:07 -26.2 Dark Up 42.6 158.8 Up 06:48:07 - 07:18:07 3260
Hawthorne 07:03:04 -26.8 Dark Up 43.3 160.1 Up 06:48:04 - 07:18:04 3229
Lee Vining 07:03:06 -27.3 Dark Up 43.7 159.3 Up 06:48:06 - 07:18:06 3184
Bishop 07:03:04 -28.0 Dark Up 44.5 160.0 Up 06:48:04 - 07:18:04 3136
Beatty 07:02:58 -28.7 Dark Up 45.3 162.0 Up 06:47:58 - 07:17:58 3101
Patrick 07:02:48 -30.6 Dark Up 47.4 165.6 Up 06:47:48 - 07:17:48 2981
Laughlin/Bullhead City 07:02:51 -30.8 Dark Up 47.5 164.5 Up 06:47:51 - 07:17:51 2960
Lake Havasu City 07:02:50 -31.5 Dark Up 48.2 164.7 Up 06:47:50 - 07:17:50 2904
Wildwood 07:03:07 -31.1 Dark Up 47.5 158.5 Up 06:48:07 - 07:18:07 2866
George/Scottsdale 07:02:41 -32.5 Dark Up 49.4 168.1 Up 06:47:41 - 07:17:41 2839
Idyllwild 07:03:00 -31.8 Dark Up 48.3 161.1 Up 06:48:00 - 07:18:00 2838
Calipatria 07:02:56 -32.6 Dark Up 49.2 162.5 Up 06:47:56 - 07:17:56 2786
Yuma 07:02:53 -33.2 Dark Up 49.9 163.7 Up 06:47:53 - 07:17:53 2750

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 11HN104, (2024/06/19 07:02UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 29.29  15
60Bet Oph      17:43:28.3 +04:34:06  2.8 11.39  43
PPM 201153     17:52:38.7 -06:08:37  5.9  1.41  39
PPM 201272     17:59:22.8 -06:06:39  7.8  0.28  40
PPM 201255     17:58:43.8 -06:14:19  9.3  0.11  40
11HN104        17:58:19.1 -06:11:50 16.6        40
Positions are for J2000

Event circumstances last updated at 2023/11/04 04:14:12 UT

Marc W. Buie, Southwest Research Institute

RECON