RECON: TNO occultation with 523741

Event between (523741) 14TY85 and star GA1200:00869550 with event index number of 1378328

Geocentric closest approach at 2024/12/18 09:27:16 UTC

J2000 position of star is 04:21:06.1 +30:45:46
Equinox of date position of star is 04:22:22.1 +30:48:32
Stellar brightness G=14.8, use SENSEUP=128
Star is 57 degrees from the moon. Moon is 89% illuminated.
TNO apparent brightness V=21.8

[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 314 seconds.
The 1-sigma cross-track error in the shadow position is 4276 km.
The sky-plane scale is 23167.9 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 12.4 sec chord
Diameter=117.7 km assuming a 30% albedo -- 5.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523741, (2024/12/18 09:27UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.4 +16:33:28  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  56
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 2.9 sigma about the mid-time.
The median site spacing is 23.8 km RECON observability=1.0 and success probability=8.2%
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 09:24:56 -57.8 Dark Up 52.0 256.2 Up 09:09:56 - 09:39:56 5856
Kelowna 09:24:57 -58.2 Dark Up 52.2 256.5 Up 09:09:57 - 09:39:57 5814
Summerland 09:24:56 -58.5 Dark Up 52.3 256.7 Up 09:09:56 - 09:39:56 5784
Penticton 09:24:56 -58.5 Dark Up 52.3 256.8 Up 09:09:56 - 09:39:56 5779
Oliver 09:24:56 -58.7 Dark Up 52.4 257.3 Up 09:09:56 - 09:39:56 5743
Anarchist Mountain Observatory 09:24:55 -58.8 Dark Up 52.3 257.7 Up 09:09:55 - 09:39:55 5729
Tonasket 09:24:54 -59.0 Dark Up 52.4 258.0 Up 09:09:54 - 09:39:54 5696
Okanogan 09:24:54 -59.4 Dark Up 52.6 258.3 Up 09:09:54 - 09:39:54 5659
Brewster 09:24:55 -59.6 Dark Up 52.7 258.5 Up 09:09:55 - 09:39:55 5628
Victoria 09:25:04 -60.9 Dark Up 55.0 254.4 Up 09:10:04 - 09:40:04 5614
Manson/Chelan 09:24:55 -60.0 Dark Up 53.0 258.4 Up 09:09:55 - 09:39:55 5600
Entiat 09:24:54 -60.2 Dark Up 53.1 258.6 Up 09:09:54 - 09:39:54 5577
Wenatchee 09:24:54 -60.4 Dark Up 53.2 258.9 Up 09:09:54 - 09:39:54 5549
Ellensburg 09:24:54 -60.8 Dark Up 53.5 259.2 Up 09:09:54 - 09:39:54 5502
Yakima 09:24:53 -61.1 Dark Up 53.5 259.7 Up 09:09:53 - 09:39:53 5460
Pasco 09:24:50 -60.6 Dark Up 52.6 261.4 Up 09:09:50 - 09:39:50 5450
Toppenish/White Swan 09:24:53 -61.2 Dark Up 53.5 260.2 Up 09:09:53 - 09:39:53 5440
PNWRO 09:24:48 -60.7 Dark Up 52.5 261.9 Up 09:09:48 - 09:39:48 5429
Goldendale 09:24:53 -61.8 Dark Up 53.9 260.5 Up 09:09:53 - 09:39:53 5375
The Dalles 09:24:54 -62.1 Dark Up 54.1 260.5 Up 09:09:54 - 09:39:54 5346
Maupin 09:24:53 -62.4 Dark Up 54.1 261.2 Up 09:09:53 - 09:39:53 5304
Redmond 09:24:51 -63.0 Dark Up 54.3 262.3 Up 09:09:51 - 09:39:51 5208
Sisters 09:24:53 -63.2 Dark Up 54.6 262.0 Up 09:09:53 - 09:39:53 5203
Bend 09:24:52 -63.3 Dark Up 54.5 262.5 Up 09:09:52 - 09:39:52 5183
Oregon Observatory 09:24:51 -63.5 Dark Up 54.6 262.6 Up 09:09:51 - 09:39:51 5162
Niwot 09:24:05 -55.0 Dark Up 42.6 277.7 Up 09:09:05 - 09:39:05 5149
La Pine/Gilchrist 09:24:52 -63.6 Dark Up 54.7 262.9 Up 09:09:52 - 09:39:52 5140
SwRI 09:24:05 -55.1 Dark Up 42.7 277.7 Up 09:09:05 - 09:39:05 5135
North Lake 09:24:49 -63.6 Dark Up 54.3 264.0 Up 09:09:49 - 09:39:49 5104
Paisley 09:24:47 -63.8 Dark Up 54.1 265.0 Up 09:09:47 - 09:39:47 5053
Lakeview 09:24:46 -64.0 Dark Up 54.0 265.8 Up 09:09:46 - 09:39:46 5003
Klamath Falls 09:24:50 -64.8 Dark Up 55.0 264.7 Up 09:09:50 - 09:39:50 4981
Cedarville 09:24:45 -64.3 Dark Up 53.9 266.9 Up 09:09:45 - 09:39:45 4936
Fall River/Burney 09:24:48 -65.3 Dark Up 54.8 266.7 Up 09:09:48 - 09:39:48 4862
Susanville 09:24:44 -65.3 Dark Up 54.3 268.1 Up 09:09:44 - 09:39:44 4809
Gimple 09:24:44 -65.6 Dark Up 54.5 268.3 Up 09:09:44 - 09:39:44 4775
Greenville 09:24:45 -65.6 Dark Up 54.5 268.2 Up 09:09:45 - 09:39:45 4774
Quincy 09:24:45 -65.7 Dark Up 54.5 268.5 Up 09:09:45 - 09:39:45 4753
Portola 09:24:43 -65.5 Dark Up 54.2 269.0 Up 09:09:43 - 09:39:43 4748
Reno 09:24:41 -65.3 Dark Up 53.7 269.8 Up 09:09:41 - 09:39:41 4732
Carson City 09:24:40 -65.5 Dark Up 53.7 270.3 Up 09:09:40 - 09:39:40 4695
Yerington 09:24:39 -65.2 Dark Up 53.2 271.0 Up 09:09:39 - 09:39:39 4686
Gardnerville 09:24:40 -65.6 Dark Up 53.6 270.7 Up 09:09:40 - 09:39:40 4669
Hawthorne 09:24:36 -65.0 Dark Up 52.8 271.9 Up 09:09:36 - 09:39:36 4648
Tonopah 09:24:31 -64.3 Dark Up 51.6 273.3 Up 09:09:31 - 09:39:31 4628
Lee Vining 09:24:37 -65.7 Dark Up 53.1 272.3 Up 09:09:37 - 09:39:37 4578
Bishop 09:24:34 -65.5 Dark Up 52.5 273.5 Up 09:09:34 - 09:39:34 4529
Beatty 09:24:29 -64.5 Dark Up 51.2 275.0 Up 09:09:29 - 09:39:29 4515
Indian Springs 09:24:25 -63.9 Dark Up 50.3 275.9 Up 09:09:25 - 09:39:25 4505
Henderson 09:24:23 -63.6 Dark Up 49.7 276.9 Up 09:09:23 - 09:39:23 4465
Patrick 09:24:18 -62.9 Dark Up 48.8 278.1 Up 09:09:18 - 09:39:18 4426
DCO 09:24:16 -62.5 Dark Up 48.1 278.8 Up 09:09:16 - 09:39:16 4411
Searchlight/Boulder City 09:24:22 -63.7 Dark Up 49.6 277.6 Up 09:09:22 - 09:39:22 4406
Kingman/Dolan Springs 09:24:19 -63.1 Dark Up 48.9 278.3 Up 09:09:19 - 09:39:19 4397
Laughlin/Bullhead City 09:24:20 -63.5 Dark Up 49.3 278.1 Up 09:09:20 - 09:39:20 4382
Mohave Valley 09:24:20 -63.6 Dark Up 49.2 278.4 Up 09:09:20 - 09:39:20 4353
Lake Havasu City 09:24:19 -63.6 Dark Up 49.0 279.0 Up 09:09:19 - 09:39:19 4317
George/Scottsdale 09:24:10 -61.8 Dark Up 46.9 280.8 Up 09:09:10 - 09:39:10 4299
Parker 09:24:18 -63.6 Dark Up 48.9 279.4 Up 09:09:18 - 09:39:18 4280
CPSLO 09:24:38 -68.0 Dark Up 54.2 275.1 Up 09:09:38 - 09:39:38 4261
Blythe 09:24:18 -64.0 Dark Up 49.1 279.8 Up 09:09:18 - 09:39:18 4217
Idyllwild 09:24:25 -65.7 Dark Up 50.8 278.9 Up 09:09:25 - 09:39:25 4178
Wildwood 09:24:30 -67.0 Dark Up 52.4 277.7 Up 09:09:30 - 09:39:30 4174
Calipatria 09:24:21 -64.9 Dark Up 49.7 280.0 Up 09:09:21 - 09:39:21 4142
Yuma 09:24:17 -64.3 Dark Up 48.9 280.9 Up 09:09:17 - 09:39:17 4118

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 09:27UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  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  56
523741         04:21:06.1 +30:45:46 14.8        57
Positions are for J2000

Event circumstances last updated at 2020/01/02 23:19:05 UT

Marc W. Buie, Southwest Research Institute

RECON