RECON: TNO occultation with 523741

Event between (523741) 14TY85 and star GA1200:00869550 with event index number of 2323923

Geocentric closest approach at 2024/12/18 09:30:24 UTC

J2000 position of star is 04:21:06.1 +30:45:46
Equinox of date position of star is 04:22:29.1 +30:48:47
Stellar brightness G=14.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 57 degrees from the moon. Moon is 89% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 32.9 AU from the Sun and 31.9 AU from the Earth.
The TNO is moving 23.3 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 102 seconds.
The 1-sigma cross-track error in the shadow position is 1635 km.
The sky-plane scale is 23167.9 km/arcsec.

The TNO has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 11.8 sec chord
Diameter=112.4 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is CENTAURS
 
 
 
 
 
 

Star training set for 523741, (2024/12/18 09:31UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.4 +16:33:27  0.8 14.65  56
44Zet Per      03:55:42.5 +31:57:21  2.8  5.87  62
PPM 069410     04:27:41.9 +31:29:36  5.3  1.27  55
PPM 069332     04:21:45.6 +32:00:41  7.3  1.21  57
PPM 069330     04:21:44.4 +30:56:39  8.9  0.24  57
PPM 069350     04:22:42.7 +31:00:23 10.1  0.19  57
523741         04:22:41.0 +30:49:13 14.8        56
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 23.3 km RECON observability=1.0 and success probability=11.6%
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 09:28:03 -57.5 Dark Up 51.5 256.9 Up 09:19:01 - 09:37:05 4085
Kelowna 09:28:03 -57.9 Dark Up 51.7 257.3 Up 09:19:01 - 09:37:05 4043
Peachland 09:28:03 -58.1 Dark Up 51.9 257.1 Up 09:19:01 - 09:37:05 4027
Summerland 09:28:03 -58.1 Dark Up 51.8 257.4 Up 09:19:01 - 09:37:05 4014
Penticton 09:28:03 -58.1 Dark Up 51.8 257.6 Up 09:19:01 - 09:37:05 4009
Oliver 09:28:02 -58.4 Dark Up 51.9 258.0 Up 09:19:00 - 09:37:04 3973
Anarchist Mountain Observatory 09:28:02 -58.4 Dark Up 51.8 258.4 Up 09:19:00 - 09:37:04 3959
Tonasket 09:28:01 -58.7 Dark Up 51.9 258.7 Up 09:18:59 - 09:37:03 3926
Okanogan 09:28:00 -59.0 Dark Up 52.1 259.0 Up 09:18:58 - 09:37:02 3889
Brewster 09:28:00 -59.3 Dark Up 52.2 259.2 Up 09:18:58 - 09:37:02 3858
Victoria 09:28:10 -60.6 Dark Up 54.5 255.2 Up 09:19:08 - 09:37:12 3843
Manson/Chelan 09:28:01 -59.6 Dark Up 52.5 259.1 Up 09:18:59 - 09:37:03 3830
Wenatchee 09:28:01 -60.0 Dark Up 52.7 259.6 Up 09:18:59 - 09:37:03 3779
Ellensburg 09:28:00 -60.4 Dark Up 52.9 259.9 Up 09:18:58 - 09:37:02 3732
Yakima 09:28:00 -60.7 Dark Up 53.0 260.4 Up 09:18:58 - 09:37:02 3690
Pasco 09:27:55 -60.2 Dark Up 52.1 262.1 Up 09:18:53 - 09:36:57 3681
Toppenish/White Swan 09:27:59 -60.8 Dark Up 52.9 260.8 Up 09:18:57 - 09:37:01 3670
PNWRO 09:27:55 -60.3 Dark Up 52.0 262.6 Up 09:18:53 - 09:36:57 3660
Goldendale 09:27:59 -61.4 Dark Up 53.3 261.2 Up 09:18:57 - 09:37:01 3606
The Dalles 09:28:00 -61.7 Dark Up 53.6 261.2 Up 09:18:58 - 09:37:02 3576
Maupin 09:27:59 -62.0 Dark Up 53.6 261.8 Up 09:18:57 - 09:37:01 3534
Redmond 09:27:58 -62.6 Dark Up 53.8 263.0 Up 09:18:56 - 09:37:00 3438
Sisters 09:27:59 -62.8 Dark Up 54.1 262.6 Up 09:18:57 - 09:37:01 3433
Bend 09:27:58 -62.9 Dark Up 53.9 263.2 Up 09:18:56 - 09:37:00 3413
Dunrhomin 09:27:12 -54.4 Dark Up 42.0 278.0 Up 09:18:10 - 09:36:14 3402
Oregon Observatory 09:27:58 -63.0 Dark Up 54.0 263.3 Up 09:18:56 - 09:37:00 3392
La Pine/Gilchrist 09:27:58 -63.2 Dark Up 54.1 263.5 Up 09:18:56 - 09:37:00 3370
North Lake 09:27:55 -63.2 Dark Up 53.7 264.6 Up 09:18:53 - 09:36:57 3335
Paisley 09:27:54 -63.3 Dark Up 53.5 265.6 Up 09:18:52 - 09:36:56 3283
Chiloquin 09:27:57 -64.2 Dark Up 54.5 264.8 Up 09:18:55 - 09:36:59 3246
Lakeview 09:27:53 -63.5 Dark Up 53.4 266.4 Up 09:18:51 - 09:36:55 3234
Klamath Falls 09:27:56 -64.3 Dark Up 54.4 265.3 Up 09:18:54 - 09:36:58 3211
Cedarville 09:27:51 -63.8 Dark Up 53.3 267.4 Up 09:18:49 - 09:36:53 3168
Fall River/Burney 09:27:54 -64.9 Dark Up 54.2 267.2 Up 09:18:52 - 09:36:56 3093
Susanville 09:27:51 -64.8 Dark Up 53.7 268.6 Up 09:18:49 - 09:36:53 3040
Gimple 09:27:51 -65.1 Dark Up 53.9 268.8 Up 09:18:49 - 09:36:53 3007
Greenville 09:27:51 -65.1 Dark Up 53.9 268.8 Up 09:18:49 - 09:36:53 3005
Quincy 09:27:51 -65.3 Dark Up 53.9 269.1 Up 09:18:49 - 09:36:53 2984
Portola 09:27:49 -65.0 Dark Up 53.6 269.5 Up 09:18:47 - 09:36:51 2980
Reno 09:27:47 -64.8 Dark Up 53.1 270.3 Up 09:18:45 - 09:36:49 2964
Carson City 09:27:47 -65.0 Dark Up 53.1 270.8 Up 09:18:45 - 09:36:49 2927
Yerington 09:27:44 -64.6 Dark Up 52.6 271.4 Up 09:18:42 - 09:36:46 2919
Gardnerville 09:27:46 -65.1 Dark Up 53.0 271.1 Up 09:18:44 - 09:36:48 2902
Hawthorne 09:27:42 -64.5 Dark Up 52.2 272.3 Up 09:18:40 - 09:36:44 2881
Tonopah 09:27:38 -63.8 Dark Up 51.0 273.7 Up 09:18:36 - 09:36:40 2862
Lee Vining 09:27:43 -65.1 Dark Up 52.5 272.8 Up 09:18:41 - 09:36:45 2810
Bishop 09:27:40 -64.9 Dark Up 51.9 274.0 Up 09:18:38 - 09:36:42 2762
Beatty 09:27:35 -63.9 Dark Up 50.6 275.4 Up 09:18:33 - 09:36:37 2750
Indian Springs 09:27:32 -63.3 Dark Up 49.7 276.3 Up 09:18:30 - 09:36:34 2740
Henderson 09:27:29 -63.0 Dark Up 49.1 277.2 Up 09:18:27 - 09:36:31 2700
Patrick 09:27:25 -62.3 Dark Up 48.1 278.5 Up 09:18:23 - 09:36:27 2662
Kingman/Dolan Springs 09:27:25 -62.5 Dark Up 48.2 278.6 Up 09:18:23 - 09:36:27 2634
Laughlin/Bullhead City 09:27:26 -62.9 Dark Up 48.7 278.4 Up 09:18:24 - 09:36:28 2618
Mohave Valley 09:27:26 -63.0 Dark Up 48.6 278.7 Up 09:18:24 - 09:36:28 2589
Lake Havasu City 09:27:25 -63.0 Dark Up 48.4 279.3 Up 09:18:23 - 09:36:27 2553
George/Scottsdale 09:27:17 -61.2 Dark Up 46.2 281.1 Up 09:18:15 - 09:36:19 2536
Parker 09:27:25 -63.0 Dark Up 48.3 279.7 Up 09:18:23 - 09:36:27 2517
CPSLO 09:27:44 -67.5 Dark Up 53.6 275.5 Up 09:18:42 - 09:36:46 2494
Blythe 09:27:25 -63.4 Dark Up 48.4 280.1 Up 09:18:23 - 09:36:27 2453
Idyllwild 09:27:31 -65.0 Dark Up 50.2 279.2 Up 09:18:29 - 09:36:33 2413
Wildwood 09:27:37 -66.4 Dark Up 51.8 278.0 Up 09:18:35 - 09:36:39 2408
Calipatria 09:27:27 -64.3 Dark Up 49.1 280.3 Up 09:18:25 - 09:36:29 2377
Yuma 09:27:24 -63.7 Dark Up 48.3 281.1 Up 09:18:22 - 09:36:26 2354

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 523741, (2024/12/18 09:31UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 14.65  56
44Zet Per      03:54:07.9 +31:53:01  2.8  5.87  62
PPM 069410     04:26:06.4 +31:26:18  5.3  1.27  55
PPM 069332     04:20:10.0 +31:57:12  7.3  1.21  57
PPM 069330     04:20:09.5 +30:53:10  8.9  0.24  57
PPM 069350     04:21:07.7 +30:56:55 10.1  0.19  57
523741         04:21:06.1 +30:45:46 14.8        57
Positions are for J2000

Event circumstances last updated at 2021/11/03 22:53:51 UT

Marc W. Buie, Southwest Research Institute

RECON