RECON: TNO occultation with 04TX357

Event between 04TX357 and star GA1260:02548251 with event index number of 1079452

Geocentric closest approach at 2021/11/05 10:35:40 UTC

J2000 position of star is 06:03:40.8 +36:50:30
Equinox of date position of star is 06:05:00.0 +36:50:23
Stellar brightness G=14.8, use SENSEUP=128
Star is 138 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 29.1 AU from the Sun and 28.5 AU from the Earth.
The TNO is moving 15.8 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 1266 seconds.
The 1-sigma cross-track error in the shadow position is 5413 km.
The sky-plane scale is 20639.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.7
Diameter=111.2 km assuming a 5% albedo -- 7.1 sec chord
Diameter=45.4 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 

Star training set for 04TX357, (2021/11/05 10:36UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:39.1 +27:58:18  1.1 23.09 117
34Bet Aur      06:01:07.9 +44:56:50  1.9  8.14 136
40 Aur         06:08:05.5 +38:28:43  5.4  1.74 137
PPM 071084     06:01:16.0 +36:02:42  7.9  1.12 139
PPM 071147     06:04:33.9 +36:31:12  8.8  0.34 138
PPM 071141     06:04:16.0 +36:52:07 10.5  0.18 138
04TX357        06:05:09.8 +36:50:22 14.8       138
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 0.7 sigma about the mid-time.
The median site spacing is 21.5 km RECON observability=1.0 and success probability=6.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 10:36:42 -40.9 Dark Down 76.2 158.6 Up 10:21:42 - 10:51:42 6849
Summerland 10:36:42 -41.2 Dark Down 76.4 157.2 Up 10:21:42 - 10:51:42 6812
Penticton 10:36:42 -41.2 Dark Down 76.5 157.5 Up 10:21:42 - 10:51:42 6808
Okanagan Falls 10:36:41 -41.3 Dark Down 76.7 157.1 Up 10:21:41 - 10:51:41 6787
Oliver 10:36:41 -41.4 Dark Down 76.8 156.9 Up 10:21:41 - 10:51:41 6771
Anarchist Mountain Observatory 10:36:40 -41.3 Dark Down 77.0 157.3 Up 10:21:40 - 10:51:40 6758
Oroville 10:36:39 -41.4 Dark Down 77.1 156.8 Up 10:21:39 - 10:51:39 6748
Tonasket 10:36:39 -41.5 Dark Down 77.3 156.5 Up 10:21:39 - 10:51:39 6724
Okanogan 10:36:39 -41.7 Dark Down 77.5 155.3 Up 10:21:39 - 10:51:39 6686
Brewster 10:36:40 -42.0 Dark Down 77.7 154.1 Up 10:21:40 - 10:51:40 6653
Manson/Chelan 10:36:41 -42.3 Dark Down 77.8 152.4 Up 10:21:41 - 10:51:41 6622
Entiat 10:36:40 -42.4 Dark Down 78.0 151.7 Up 10:21:40 - 10:51:40 6598
Wenatchee 10:36:39 -42.6 Dark Down 78.2 150.7 Up 10:21:39 - 10:51:39 6569
Ellensburg 10:36:41 -42.9 Dark Down 78.5 148.9 Up 10:21:41 - 10:51:41 6520
Yakima 10:36:39 -43.1 Dark Down 78.8 147.8 Up 10:21:39 - 10:51:39 6477
Pasco 10:36:33 -42.4 Dark Down 79.6 152.4 Up 10:21:33 - 10:51:33 6477
Toppenish/White Swan 10:36:38 -43.1 Dark Down 79.0 147.8 Up 10:21:38 - 10:51:38 6459
PNWRO 10:36:31 -42.4 Dark Down 79.9 152.7 Up 10:21:31 - 10:51:31 6457
George/Umatilla 10:36:32 -42.7 Dark Down 79.8 150.6 Up 10:21:32 - 10:51:32 6437
Goldendale 10:36:39 -43.6 Dark Down 79.3 144.6 Up 10:21:39 - 10:51:39 6390
The Dalles 10:36:41 -44.0 Dark Down 79.4 142.6 Up 10:21:41 - 10:51:41 6358
Maupin 10:36:39 -44.1 Dark Down 79.7 141.5 Up 10:21:39 - 10:51:39 6316
Niwot 10:35:10 -34.6 Dark Down 83.2 243.6 Up 10:20:10 - 10:50:10 6296
SwRI 10:35:09 -34.7 Dark Down 83.3 244.0 Up 10:20:09 - 10:50:09 6282
Madras/Culver 10:36:37 -44.4 Dark Down 80.1 139.4 Up 10:21:37 - 10:51:37 6258
Redmond 10:36:38 -44.5 Dark Down 80.4 137.8 Up 10:21:38 - 10:51:38 6219
Sisters 10:36:39 -44.8 Dark Down 80.2 136.4 Up 10:21:39 - 10:51:39 6212
Bend 10:36:37 -44.7 Dark Down 80.5 136.4 Up 10:21:37 - 10:51:37 6193
Oregon Observatory 10:36:39 -44.9 Dark Down 80.5 135.2 Up 10:21:39 - 10:51:39 6171
La Pine/Gilchrist 10:36:38 -45.0 Dark Down 80.6 134.1 Up 10:21:38 - 10:51:38 6148
North Lake 10:36:35 -44.8 Dark Down 81.3 134.5 Up 10:21:35 - 10:51:35 6117
Paisley 10:36:31 -44.8 Dark Down 81.8 133.2 Up 10:21:31 - 10:51:31 6068
Chiloquin 10:36:37 -45.7 Dark Down 81.2 127.5 Up 10:21:37 - 10:51:37 6022
Lakeview 10:36:30 -44.9 Dark Down 82.3 131.3 Up 10:21:30 - 10:51:30 6019
Klamath Falls 10:36:37 -45.8 Dark Down 81.4 126.0 Up 10:21:37 - 10:51:37 5988
Tulelake 10:36:35 -45.7 Dark Down 81.8 125.6 Up 10:21:35 - 10:51:35 5966
Cedarville 10:36:26 -45.0 Dark Down 82.8 128.1 Up 10:21:26 - 10:51:26 5955
Fall River/Burney 10:36:33 -46.0 Dark Down 82.3 120.4 Up 10:21:33 - 10:51:33 5872
Susanville 10:36:26 -45.7 Dark Down 83.1 118.7 Up 10:21:26 - 10:51:26 5825
Gimple 10:36:27 -46.0 Dark Down 83.1 115.9 Up 10:21:27 - 10:51:27 5790
Greenville 10:36:28 -46.0 Dark Down 83.0 115.7 Up 10:21:28 - 10:51:28 5788
Quincy 10:36:26 -46.1 Dark Down 83.1 114.1 Up 10:21:26 - 10:51:26 5766
Portola 10:36:24 -45.8 Dark Down 83.5 114.7 Up 10:21:24 - 10:51:24 5766
Reno 10:36:21 -45.5 Dark Down 84.0 114.8 Up 10:21:21 - 10:51:21 5755
Carson City 10:36:20 -45.6 Dark Down 84.2 111.7 Up 10:21:20 - 10:51:20 5718
Yerington 10:36:17 -45.2 Dark Down 84.7 112.1 Up 10:21:17 - 10:51:17 5715
Gardnerville 10:36:20 -45.6 Dark Down 84.3 109.6 Up 10:21:20 - 10:51:20 5693
Hawthorne 10:36:13 -44.9 Dark Down 85.3 109.0 Up 10:21:13 - 10:51:13 5681
Tonopah 10:36:04 -44.0 Dark Down 86.4 108.6 Up 10:21:04 - 10:51:04 5673
Lee Vining 10:36:14 -45.5 Dark Down 85.0 101.1 Up 10:21:14 - 10:51:14 5608
Beatty 10:35:58 -44.0 Dark Down 87.0 90.0 Up 10:20:58 - 10:50:58 5567
Indian Springs 10:35:53 -43.3 Dark Down 87.8 82.2 Up 10:20:53 - 10:50:53 5567
Bishop 10:36:10 -45.1 Dark Down 85.7 95.3 Up 10:21:10 - 10:51:10 5566
Henderson 10:35:47 -42.9 Dark Down 88.2 63.7 Up 10:20:47 - 10:50:47 5534
Patrick 10:35:39 -42.1 Dark Down 88.4 28.8 Up 10:20:39 - 10:50:39 5506
DCO 10:35:37 -41.6 Dark Down 88.2 7.5 Up 10:20:37 - 10:50:37 5499
Lone Pine 10:36:05 -45.1 Dark Down 85.9 85.1 Up 10:21:05 - 10:51:05 5496
Kingman/Dolan Springs 10:35:41 -42.3 Dark Down 88.1 29.5 Up 10:20:41 - 10:50:41 5477
Searchlight/Boulder City 10:35:46 -42.9 Dark Down 87.9 49.2 Up 10:20:46 - 10:50:46 5476
Laughlin/Bullhead City 10:35:43 -42.7 Dark Down 87.8 38.6 Up 10:20:43 - 10:50:43 5457
Mohave Valley 10:35:42 -42.8 Dark Down 87.6 34.4 Up 10:20:42 - 10:50:42 5429
Lake Havasu City 10:35:40 -42.7 Dark Down 87.4 26.0 Up 10:20:40 - 10:50:40 5396
Parker 10:35:41 -42.7 Dark Down 87.1 22.6 Up 10:20:41 - 10:50:41 5361
Blythe 10:35:39 -43.0 Dark Down 86.5 23.0 Up 10:20:39 - 10:50:39 5297
CPSLO 10:36:17 -47.4 Dark Down 83.6 73.8 Up 10:21:17 - 10:51:17 5285
Idyllwild 10:35:51 -44.7 Dark Down 85.6 43.7 Up 10:20:51 - 10:50:51 5239
Wildwood 10:36:03 -46.1 Dark Down 84.7 57.4 Up 10:21:03 - 10:51:03 5218
Calipatria 10:35:44 -43.9 Dark Down 85.7 29.3 Up 10:20:44 - 10:50:44 5214
Yuma 10:35:38 -43.2 Dark Down 85.6 18.7 Up 10:20:38 - 10:50:38 5200

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 04TX357, (2021/11/05 10:36UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 23.09 117
34Bet Aur      05:59:31.6 +44:56:51  1.9  8.14 136
40 Aur         06:06:35.1 +38:28:57  5.4  1.74 137
PPM 071084     05:59:47.6 +36:02:43  7.9  1.12 139
PPM 071147     06:03:05.1 +36:31:19  8.8  0.34 138
PPM 071141     06:02:46.9 +36:52:14 10.5  0.18 138
04TX357        06:03:40.8 +36:50:30 14.8       138
Positions are for J2000

Event circumstances last updated at 2019/06/08 02:35:47 UT

Marc W. Buie, Southwest Research Institute

RECON