RECON: TNO occultation with 03TL58

Event between 03TL58 and star GA1100:02104029 with event index number of 362918

Geocentric closest approach at 2020/10/24 07:44:25 UTC

J2000 position of star is 06:28:31.3 +20:33:14
Equinox of date position of star is 06:29:38.6 +20:32:26
Stellar brightness G=13.8, use SENSEUP=64
Star is 146 degrees from the moon. Moon is 58% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 41.7 AU from the Sun and 41.3 AU from the Earth.
The TNO is moving 8.4 km/sec on the sky relative to the star, or, 1.0 arcsec/hr.
The 1-sigma error in the time of the event is 1036 seconds.
The 1-sigma cross-track error in the shadow position is 2215 km.
The sky-plane scale is 29971.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=219.8 km assuming a 5% albedo -- 26.3 sec chord
Diameter=89.7 km assuming a 30% albedo -- 10.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 03TL58, (2020/10/24 07:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:18.0 +07:24:33  0.4 15.43 134
Alhena         06:38:54.8 +16:22:47  1.9  4.69 147
16 Gem         06:29:11.0 +20:28:54  6.1  0.15 146
03TL58         06:29:45.7 +20:32:21 13.8       146
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 0.9 sigma about the mid-time.
The median site spacing is 17.3 km RECON observability=1.0 and success probability=18.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 07:50:29 -52.1 Dark Down 30.9 94.3 Up 07:35:29 - 08:05:29 621
Kelowna 07:50:27 -52.0 Dark Down 31.1 94.6 Up 07:35:27 - 08:05:27 613
Penticton 07:50:31 -52.4 Dark Down 31.0 94.2 Up 07:35:31 - 08:05:31 594
Okanagan Falls 07:50:33 -52.6 Dark Down 31.0 94.1 Up 07:35:33 - 08:05:33 582
Oliver 07:50:35 -52.7 Dark Down 31.1 94.0 Up 07:35:35 - 08:05:35 571
Anarchist Mountain Observatory 07:50:36 -52.9 Dark Down 31.2 94.1 Up 07:35:36 - 08:05:36 554
Oroville 07:50:37 -53.0 Dark Down 31.2 94.0 Up 07:35:37 - 08:05:37 551
Tonasket 07:50:40 -53.2 Dark Down 31.2 93.9 Up 07:35:40 - 08:05:40 535
Okanogan 07:50:44 -53.5 Dark Down 31.1 93.6 Up 07:35:44 - 08:05:44 517
Brewster 07:50:47 -53.8 Dark Down 31.0 93.2 Up 07:35:47 - 08:05:47 504
Manson/Chelan 07:50:50 -54.0 Dark Down 30.8 92.8 Up 07:35:50 - 08:05:50 500
Entiat 07:50:53 -54.3 Dark Down 30.8 92.7 Up 07:35:53 - 08:05:53 487
Wenatchee 07:50:56 -54.5 Dark Down 30.7 92.5 Up 07:35:56 - 08:05:56 473
Ellensburg 07:51:00 -54.9 Dark Down 30.6 92.1 Up 07:36:00 - 08:06:00 450
Yakima 07:51:05 -55.3 Dark Down 30.6 91.8 Up 07:36:05 - 08:06:05 423
Toppenish/White Swan 07:51:06 -55.6 Dark Down 30.7 91.8 Up 07:36:06 - 08:06:06 403
Goldendale 07:51:14 -56.1 Dark Down 30.5 91.2 Up 07:36:14 - 08:06:14 376
The Dalles 07:51:17 -56.3 Dark Down 30.2 90.8 Up 07:36:17 - 08:06:17 371
Pasco 07:51:04 -55.6 Dark Down 31.6 92.7 Up 07:36:04 - 08:06:04 357
George/Umatilla 07:51:08 -56.0 Dark Down 31.5 92.3 Up 07:36:08 - 08:06:08 339
Maupin 07:51:21 -56.8 Dark Down 30.3 90.7 Up 07:36:21 - 08:06:21 338
PNWRO 07:51:06 -55.9 Dark Down 31.8 92.7 Up 07:36:06 - 08:06:06 332
Madras/Culver 07:51:26 -57.3 Dark Down 30.3 90.3 Up 07:36:26 - 08:06:26 300
Sisters 07:51:31 -57.6 Dark Down 30.0 89.8 Up 07:36:31 - 08:06:31 290
Redmond 07:51:30 -57.7 Dark Down 30.3 90.1 Up 07:36:30 - 08:06:30 276
Bend 07:51:33 -57.9 Dark Down 30.2 89.9 Up 07:36:33 - 08:06:33 265
Oregon Observatory 07:51:35 -58.1 Dark Down 30.1 89.7 Up 07:36:35 - 08:06:35 256
La Pine/Gilchrist 07:51:37 -58.3 Dark Down 30.1 89.5 Up 07:36:37 - 08:06:37 243
North Lake 07:51:39 -58.7 Dark Down 30.5 89.7 Up 07:36:39 - 08:06:39 193
Chiloquin 07:51:49 -59.4 Dark Down 29.8 88.7 Low 07:36:49 - 08:06:49 172
Klamath Falls 07:51:52 -59.7 Dark Down 29.9 88.6 Low 07:36:52 - 08:06:52 144
Paisley 07:51:43 -59.2 Dark Down 30.8 89.6 Up 07:36:43 - 08:06:43 140
Tulelake 07:51:54 -60.0 Dark Down 30.1 88.6 Up 07:36:54 - 08:06:54 114
Lakeview 07:51:48 -59.7 Dark Down 30.9 89.5 Up 07:36:48 - 08:06:48 96
Fall River/Burney 07:52:02 -60.9 Dark Down 30.2 88.2 Up 07:37:02 - 08:07:02 43
Cedarville 07:51:53 -60.4 Dark Down 31.1 89.2 Up 07:36:53 - 08:06:53 41
Susanville 07:52:06 -61.5 Dark Down 30.7 88.3 Up 07:37:06 - 08:07:06 -30
Greenville 07:52:09 -61.8 Dark Down 30.5 87.9 Up 07:37:09 - 08:07:09 -41
Gimple 07:52:09 -61.8 Dark Down 30.6 88.0 Up 07:37:09 - 08:07:09 -44
Quincy 07:52:11 -62.0 Dark Down 30.5 87.8 Up 07:37:11 - 08:07:11 -57
Portola 07:52:11 -62.1 Dark Down 30.9 88.0 Up 07:37:11 - 08:07:11 -83
Reno 07:52:11 -62.3 Dark Down 31.4 88.3 Up 07:37:11 - 08:07:11 -125
Carson City 07:52:14 -62.7 Dark Down 31.4 88.1 Up 07:37:14 - 08:07:14 -154
Gardnerville 07:52:16 -62.9 Dark Down 31.4 88.0 Up 07:37:16 - 08:07:16 -175
Yerington 07:52:14 -62.8 Dark Down 31.9 88.4 Up 07:37:14 - 08:07:14 -190
Hawthorne 07:52:16 -63.2 Dark Down 32.3 88.4 Up 07:37:16 - 08:07:16 -245
Lee Vining 07:52:22 -63.9 Dark Down 31.9 87.8 Up 07:37:22 - 08:07:22 -275
Tonopah 07:52:14 -63.5 Dark Down 33.4 88.9 Up 07:37:14 - 08:07:14 -330
Bishop 07:52:25 -64.4 Dark Down 32.4 87.8 Up 07:37:25 - 08:07:25 -348
Lone Pine 07:52:30 -65.1 Dark Down 32.7 87.5 Up 07:37:30 - 08:07:30 -422
CPSLO 07:52:51 -66.6 Dark Down 30.6 85.3 Up 07:37:51 - 08:07:51 -441
Beatty 07:52:22 -64.6 Dark Down 33.7 88.5 Up 07:37:22 - 08:07:22 -441
Indian Springs 07:52:20 -64.7 Dark Down 34.6 88.9 Up 07:37:20 - 08:07:20 -505
Niwot 07:50:58 -58.3 Dark Down 42.3 98.4 Up 07:35:58 - 08:05:58 -552
Henderson 07:52:22 -65.1 Dark Down 35.1 88.9 Up 07:37:22 - 08:07:22 -574
Wildwood 07:52:54 -67.6 Dark Down 32.2 85.7 Up 07:37:54 - 08:07:54 -615
Searchlight/Boulder City 07:52:27 -65.6 Dark Down 35.2 88.6 Up 07:37:27 - 08:07:27 -625
Laughlin/Bullhead City 07:52:27 -65.8 Dark Down 35.5 88.5 Up 07:37:27 - 08:07:27 -663
Patrick 07:52:22 -65.4 Dark Down 36.0 89.1 Up 07:37:22 - 08:07:22 -666
Kingman/Dolan Springs 07:52:25 -65.6 Dark Down 35.9 88.8 Up 07:37:25 - 08:07:25 -679
Mohave Valley 07:52:29 -66.1 Dark Down 35.5 88.4 Up 07:37:29 - 08:07:29 -686
Idyllwild 07:52:48 -67.7 Dark Down 33.7 86.4 Up 07:37:48 - 08:07:48 -712
DCO 07:52:22 -65.5 Dark Down 36.6 89.3 Up 07:37:22 - 08:07:22 -717
Lake Havasu City 07:52:31 -66.4 Dark Down 35.7 88.2 Up 07:37:31 - 08:07:31 -730
Parker 07:52:34 -66.7 Dark Down 35.7 88.0 Up 07:37:34 - 08:07:34 -761
Blythe 07:52:40 -67.3 Dark Down 35.4 87.5 Up 07:37:40 - 08:07:40 -797
Calipatria 07:52:48 -68.0 Dark Down 34.7 86.6 Up 07:37:48 - 08:07:48 -807
Yuma 07:52:47 -68.1 Dark Down 35.4 86.8 Up 07:37:47 - 08:07:47 -877

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 03TL58, (2020/10/24 07:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.43 134
Alhena         06:37:42.8 +16:23:57  1.9  4.69 147
16 Gem         06:27:56.7 +20:29:46  6.1  0.15 146
03TL58         06:28:31.3 +20:33:14 13.8       146
Positions are for J2000

Event circumstances last updated at 2018/10/27 20:51:18 UT

Marc W. Buie, Southwest Research Institute

RECON