RECON: TNO occultation with 523615

Event between (523615) 06UO321 and star GA0980:00137232 with event index number of 1314140

Geocentric closest approach at 2023/10/23 05:10:47 UTC

J2000 position of star is 01:35:15.8 +08:15:32
Equinox of date position of star is 01:36:17.1 +08:21:28
Stellar brightness G=15.9, use SENSEUP=128
Star is 71 degrees from the moon. Moon is 62% illuminated.
TNO apparent brightness V=23.8

[RECON map]
TNO is 42.8 AU from the Sun and 41.8 AU from the Earth.
The TNO is moving 25.2 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 231 seconds.
The 1-sigma cross-track error in the shadow position is 3551 km.
The sky-plane scale is 30320.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.5
Diameter=190.6 km assuming a 5% albedo -- 7.6 sec chord
Diameter=77.8 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 523615, (2023/10/23 05:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:17.4 +16:33:20  0.8 44.78 115
6Bet Ari       01:55:57.6 +20:55:25  2.6 13.39  81
PPM 144653     01:30:17.8 +07:24:59  6.4  1.82  70
PPM 144767     01:36:07.7 +08:23:45  7.8  0.10  71
523615         01:36:30.9 +08:22:48 15.9        72
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 3.9 sigma about the mid-time.
The median site spacing is 14.7 km RECON observability=1.0 and success probability=7.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:11:13 -40.5 Dark Up 39.7 134.0 Up 04:56:13 - 05:26:13 5268
Summerland 05:11:14 -40.6 Dark Up 39.7 133.5 Up 04:56:14 - 05:26:14 5258
Penticton 05:11:14 -40.7 Dark Up 39.8 133.6 Up 04:56:14 - 05:26:14 5251
Okanagan Falls 05:11:15 -40.8 Dark Up 40.0 133.5 Up 04:56:15 - 05:26:15 5240
Oliver 05:11:16 -40.9 Dark Up 40.1 133.4 Up 04:56:16 - 05:26:16 5230
Anarchist Mountain Observatory 05:11:15 -41.1 Dark Up 40.3 133.5 Up 04:56:15 - 05:26:15 5214
Oroville 05:11:16 -41.1 Dark Up 40.3 133.4 Up 04:56:16 - 05:26:16 5212
Tonasket 05:11:16 -41.2 Dark Up 40.5 133.2 Up 04:56:16 - 05:26:16 5198
Okanogan 05:11:18 -41.4 Dark Up 40.6 132.9 Up 04:56:18 - 05:26:18 5181
Brewster 05:11:19 -41.4 Dark Up 40.7 132.5 Up 04:56:19 - 05:26:19 5170
Manson/Chelan 05:11:20 -41.4 Dark Up 40.7 131.9 Up 04:56:20 - 05:26:20 5167
Entiat 05:11:22 -41.4 Dark Up 40.8 131.7 Up 04:56:22 - 05:26:22 5155
Wenatchee 05:11:22 -41.5 Dark Up 40.9 131.4 Up 04:56:22 - 05:26:22 5142
Ellensburg 05:11:24 -41.7 Dark Up 41.1 130.9 Up 04:56:24 - 05:26:24 5123
Yakima 05:11:25 -41.9 Dark Up 41.3 130.6 Up 04:56:25 - 05:26:25 5098
Toppenish/White Swan 05:11:25 -42.1 Dark Up 41.6 130.7 Up 04:56:25 - 05:26:25 5079
Goldendale 05:11:28 -42.2 Dark Up 41.7 129.8 Up 04:56:28 - 05:26:28 5056
The Dalles 05:11:30 -42.1 Dark Up 41.6 129.3 Up 04:56:30 - 05:26:30 5052
Pasco 05:11:23 -42.9 Dark Up 42.3 132.0 Up 04:56:23 - 05:26:23 5035
Maupin 05:11:30 -42.4 Dark Up 42.0 129.1 Up 04:56:30 - 05:26:30 5021
George/Umatilla 05:11:24 -43.0 Dark Up 42.4 131.6 Up 04:56:24 - 05:26:24 5020
PNWRO 05:11:23 -43.2 Dark Up 42.6 132.1 Up 04:56:23 - 05:26:23 5013
Madras/Culver 05:11:32 -42.6 Dark Up 42.3 128.7 Up 04:56:32 - 05:26:32 4987
Sisters 05:11:34 -42.6 Dark Up 42.3 128.0 Up 04:56:34 - 05:26:34 4978
Redmond 05:11:33 -42.8 Dark Up 42.5 128.4 Up 04:56:33 - 05:26:33 4965
Bend 05:11:34 -42.8 Dark Up 42.5 128.1 Up 04:56:34 - 05:26:34 4955
Oregon Observatory 05:11:35 -42.9 Dark Up 42.6 127.8 Up 04:56:35 - 05:26:35 4947
La Pine/Gilchrist 05:11:36 -42.9 Dark Up 42.7 127.6 Up 04:56:36 - 05:26:36 4935
North Lake 05:11:35 -43.5 Dark Up 43.3 128.0 Up 04:56:35 - 05:26:35 4888
Chiloquin 05:11:40 -43.3 Dark Up 43.1 126.4 Up 04:56:40 - 05:26:40 4870
Klamath Falls 05:11:41 -43.5 Dark Up 43.4 126.2 Up 04:56:41 - 05:26:41 4844
Paisley 05:11:37 -44.0 Dark Up 43.8 127.9 Up 04:56:37 - 05:26:37 4840
Tulelake 05:11:40 -43.8 Dark Up 43.7 126.4 Up 04:56:40 - 05:26:40 4817
Lakeview 05:11:37 -44.4 Dark Up 44.3 127.8 Up 04:56:37 - 05:26:37 4799
Fall River/Burney 05:11:44 -44.3 Dark Up 44.3 125.8 Up 04:56:44 - 05:26:44 4751
Cedarville 05:11:39 -44.9 Dark Up 44.8 127.5 Up 04:56:39 - 05:26:39 4747
Susanville 05:11:43 -45.1 Dark Up 45.2 126.1 Up 04:56:43 - 05:26:43 4683
Greenville 05:11:44 -45.1 Dark Up 45.1 125.5 Up 04:56:44 - 05:26:44 4672
Gimple 05:11:44 -45.1 Dark Up 45.2 125.6 Up 04:56:44 - 05:26:44 4670
Quincy 05:11:45 -45.2 Dark Up 45.3 125.4 Up 04:56:45 - 05:26:45 4658
Portola 05:11:44 -45.6 Dark Up 45.6 125.8 Up 04:56:44 - 05:26:44 4634
Reno 05:11:43 -46.1 Dark Up 46.2 126.3 Up 04:56:43 - 05:26:43 4594
Carson City 05:11:44 -46.3 Dark Up 46.4 126.0 Up 04:56:44 - 05:26:44 4567
Gardnerville 05:11:45 -46.5 Dark Up 46.6 125.8 Up 04:56:45 - 05:26:45 4547
Yerington 05:11:43 -46.8 Dark Up 46.9 126.5 Up 04:56:43 - 05:26:43 4532
Hawthorne 05:11:43 -47.4 Dark Up 47.5 126.7 Up 04:56:43 - 05:26:43 4481
Lee Vining 05:11:46 -47.4 Dark Up 47.6 125.7 Up 04:56:46 - 05:26:46 4454
Tonopah 05:11:41 -48.6 Dark Up 48.7 127.9 Up 04:56:41 - 05:26:41 4400
Bishop 05:11:46 -48.2 Dark Up 48.4 126.0 Up 04:56:46 - 05:26:46 4385
Lone Pine 05:11:47 -48.8 Dark Up 49.0 125.6 Up 04:56:47 - 05:26:47 4315
CPSLO 05:11:56 -47.5 Dark Up 48.0 121.6 Up 04:56:56 - 05:26:56 4301
Beatty 05:11:43 -49.5 Dark Up 49.7 127.4 Up 04:56:43 - 05:26:43 4296
Indian Springs 05:11:40 -50.4 Dark Up 50.6 128.4 Up 04:56:40 - 05:26:40 4234
Niwot 05:11:02 -54.5 Dark Up 53.6 145.5 Up 04:56:02 - 05:26:02 4169
Henderson 05:11:40 -51.2 Dark Up 51.3 128.7 Up 04:56:40 - 05:26:40 4169
SwRI 05:11:03 -54.5 Dark Up 53.6 145.3 Up 04:56:03 - 05:26:03 4164
Wildwood 05:11:55 -49.5 Dark Up 50.1 122.6 Up 04:56:55 - 05:26:55 4135
Searchlight/Boulder City 05:11:41 -51.5 Dark Up 51.7 128.2 Up 04:56:41 - 05:26:41 4121
Laughlin/Bullhead City 05:11:41 -51.9 Dark Up 52.2 128.3 Up 04:56:41 - 05:26:41 4085
Patrick 05:11:39 -52.3 Dark Up 52.4 129.5 Up 04:56:39 - 05:26:39 4081
Kingman/Dolan Springs 05:11:40 -52.3 Dark Up 52.5 129.0 Up 04:56:40 - 05:26:40 4069
Mohave Valley 05:11:42 -52.1 Dark Up 52.3 128.1 Up 04:56:42 - 05:26:42 4063
Idyllwild 05:11:50 -51.1 Dark Up 51.6 124.4 Up 04:56:50 - 05:26:50 4042
DCO 05:11:37 -52.9 Dark Up 53.1 130.0 Up 04:56:37 - 05:26:37 4032
Lake Havasu City 05:11:42 -52.4 Dark Up 52.7 128.0 Up 04:56:42 - 05:26:42 4022
Parker 05:11:43 -52.6 Dark Up 53.0 127.6 Up 04:56:43 - 05:26:43 3992
Blythe 05:11:45 -52.7 Dark Up 53.1 126.7 Up 04:56:45 - 05:26:45 3959
Calipatria 05:11:49 -52.2 Dark Up 52.8 125.1 Up 04:56:49 - 05:26:49 3951
Yuma 05:11:48 -53.1 Dark Up 53.6 125.7 Up 04:56:48 - 05:26:48 3884

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 523615, (2023/10/23 05:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 44.78 115
6Bet Ari       01:54:38.5 +20:48:27  2.6 13.39  81
PPM 144653     01:29:03.1 +07:17:38  6.4  1.82  70
PPM 144767     01:34:52.6 +08:16:29  7.8  0.10  71
523615         01:35:15.8 +08:15:32 15.9        71
Positions are for J2000

Event circumstances last updated at 2019/06/08 06:05:01 UT

Marc W. Buie, Southwest Research Institute

RECON