RECON: TNO occultation with 04TX357

Event between 04TX357 and star GA1240:01931341 with event index number of 238020

Geocentric closest approach at 2020/01/16 03:12:54 UTC

J2000 position of star is 05:29:21.4 +35:55:32
Equinox of date position of star is 05:30:37.3 +35:56:21
Stellar brightness G=16.1, use SENSEUP=128
Star is 102 degrees from the moon. Moon is 66% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 29.0 AU from the Sun and 28.2 AU from the Earth.
The TNO is moving 20.0 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 560 seconds.
The 1-sigma cross-track error in the shadow position is 3385 km.
The sky-plane scale is 20436.4 km/arcsec.

The TNO has an absolute magnitude Hv=8.7
Diameter=111.2 km assuming a 5% albedo -- 5.5 sec chord
Diameter=45.4 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 

Star training set for 04TX357, (2020/01/16 03:13UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.4 +16:32:53  0.8 22.76 117
3Iot Aur       04:58:18.1 +33:11:46  2.7  7.21 109
PPM 070537     05:34:58.2 +34:44:17  6.1  1.48 101
PPM 070452     05:31:03.1 +35:23:22  6.6  0.56 102
PPM 070438     05:30:43.9 +35:54:03  9.1  0.04 102
04TX357        05:30:42.3 +35:56:24 16.1       101
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 1.6 sigma about the mid-time.
The median site spacing is 22.0 km RECON observability=1.0 and success probability=15.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 03:14:44 -26.5 Dark Down 59.1 102.0 Up 02:59:44 - 03:29:44 722
Kelowna 03:14:43 -26.7 Dark Down 59.3 102.5 Up 02:59:43 - 03:29:43 713
Penticton 03:14:45 -26.6 Dark Down 59.3 101.7 Up 02:59:45 - 03:29:45 688
Okanagan Falls 03:14:45 -26.6 Dark Down 59.3 101.4 Up 02:59:45 - 03:29:45 672
Oliver 03:14:45 -26.6 Dark Down 59.3 101.1 Up 02:59:45 - 03:29:45 657
Anarchist Mountain Observatory 03:14:46 -26.7 Dark Down 59.5 101.0 Up 02:59:46 - 03:29:46 635
Oroville 03:14:46 -26.7 Dark Down 59.5 100.8 Up 02:59:46 - 03:29:46 631
Tonasket 03:14:47 -26.7 Dark Down 59.5 100.4 Up 02:59:47 - 03:29:47 610
Okanogan 03:14:48 -26.6 Dark Down 59.5 99.7 Up 02:59:48 - 03:29:48 586
Brewster 03:14:50 -26.4 Dark Down 59.4 99.1 Up 02:59:50 - 03:29:50 569
Manson/Chelan 03:14:52 -26.2 Dark Down 59.2 98.4 Up 02:59:52 - 03:29:52 564
Entiat 03:14:52 -26.1 Dark Down 59.2 98.0 Up 02:59:52 - 03:29:52 547
Wenatchee 03:14:53 -26.0 Dark Down 59.1 97.5 Up 02:59:53 - 03:29:53 528
Ellensburg 03:14:56 -25.9 Dark Down 59.0 96.6 Up 02:59:56 - 03:29:56 499
Yakima 03:14:57 -25.8 Dark Down 59.1 95.9 Up 02:59:57 - 03:29:57 464
Toppenish/White Swan 03:14:57 -25.9 Dark Down 59.2 95.7 Up 02:59:57 - 03:29:57 438
Goldendale 03:15:00 -25.6 Dark Down 59.0 94.5 Up 03:00:00 - 03:30:00 405
The Dalles 03:15:02 -25.3 Dark Down 58.8 93.8 Up 03:00:02 - 03:30:02 399
Pasco 03:14:54 -26.8 Dark Down 60.1 96.6 Up 02:59:54 - 03:29:54 380
George/Umatilla 03:14:56 -26.6 Dark Down 60.0 95.8 Up 02:59:56 - 03:29:56 358
Maupin 03:15:03 -25.4 Dark Down 58.9 93.2 Up 03:00:03 - 03:30:03 357
PNWRO 03:14:54 -26.9 Dark Down 60.3 96.4 Up 02:59:54 - 03:29:54 349
Madras/Culver 03:15:05 -25.3 Dark Down 58.9 92.3 Up 03:00:05 - 03:30:05 310
Sisters 03:15:07 -25.0 Dark Down 58.6 91.4 Up 03:00:07 - 03:30:07 298
Redmond 03:15:06 -25.2 Dark Down 58.8 91.6 Up 03:00:06 - 03:30:06 280
Bend 03:15:07 -25.1 Dark Down 58.7 91.2 Up 03:00:07 - 03:30:07 266
Oregon Observatory 03:15:08 -25.0 Dark Down 58.7 90.8 Up 03:00:08 - 03:30:08 255
La Pine/Gilchrist 03:15:09 -25.0 Dark Down 58.6 90.4 Up 03:00:09 - 03:30:09 239
North Lake 03:15:08 -25.3 Dark Down 59.1 90.1 Up 03:00:08 - 03:30:08 176
Chiloquin 03:15:13 -24.6 Dark Down 58.4 88.4 Up 03:00:13 - 03:30:13 153
Klamath Falls 03:15:14 -24.6 Dark Down 58.4 87.9 Up 03:00:14 - 03:30:14 119
Paisley 03:15:09 -25.6 Dark Down 59.3 89.5 Up 03:00:09 - 03:30:09 111
Tulelake 03:15:14 -24.8 Dark Down 58.6 87.6 Up 03:00:14 - 03:30:14 82
Lakeview 03:15:10 -25.6 Dark Down 59.5 88.7 Up 03:00:10 - 03:30:10 57
Fall River/Burney 03:15:17 -24.8 Dark Down 58.6 86.2 Up 03:00:17 - 03:30:17 -5
Cedarville 03:15:12 -25.7 Dark Down 59.6 87.7 Up 03:00:12 - 03:30:12 -11
Susanville 03:15:17 -25.2 Dark Down 59.2 85.6 Up 03:00:17 - 03:30:17 -94
Greenville 03:15:18 -25.0 Dark Down 58.9 85.0 Up 03:00:18 - 03:30:18 -107
Gimple 03:15:18 -25.1 Dark Down 59.0 85.0 Up 03:00:18 - 03:30:18 -111
Quincy 03:15:19 -25.0 Dark Down 58.9 84.6 Up 03:00:19 - 03:30:19 -126
Portola 03:15:18 -25.3 Dark Down 59.3 84.7 Up 03:00:18 - 03:30:18 -158
Reno 03:15:17 -25.8 Dark Down 59.7 84.6 Up 03:00:17 - 03:30:17 -210
Carson City 03:15:17 -25.8 Dark Down 59.7 84.0 Up 03:00:17 - 03:30:17 -244
Gardnerville 03:15:18 -25.8 Dark Down 59.7 83.6 Up 03:00:18 - 03:30:18 -269
Yerington 03:15:16 -26.2 Dark Down 60.2 83.9 Up 03:00:16 - 03:30:16 -289
Hawthorne 03:15:16 -26.6 Dark Down 60.5 83.4 Up 03:00:16 - 03:30:16 -355
Lee Vining 03:15:19 -26.1 Dark Down 60.1 82.2 Up 03:00:19 - 03:30:19 -388
Tonopah 03:15:13 -27.6 Dark Down 61.6 83.2 Up 03:00:13 - 03:30:13 -458
Bishop 03:15:18 -26.6 Dark Down 60.6 81.4 Up 03:00:18 - 03:30:18 -475
Lone Pine 03:15:19 -26.8 Dark Down 60.7 80.2 Up 03:00:19 - 03:30:19 -562
CPSLO 03:15:31 -24.6 Dark Down 58.4 77.2 Up 03:00:31 - 03:30:31 -573
Beatty 03:15:14 -27.9 Dark Down 61.8 81.2 Up 03:00:14 - 03:30:14 -588
Indian Springs 03:15:12 -28.7 Dark Down 62.6 81.0 Up 03:00:12 - 03:30:12 -664
Niwot 03:14:27 -36.9 Dark Down 70.8 95.0 Up 02:59:27 - 03:29:27 -702
Henderson 03:15:10 -29.2 Dark Down 63.0 80.2 Up 03:00:10 - 03:30:10 -745
Wildwood 03:15:28 -26.0 Dark Down 59.8 75.8 Up 03:00:28 - 03:30:28 -780
Searchlight/Boulder City 03:15:12 -29.2 Dark Down 63.0 79.1 Up 03:00:12 - 03:30:12 -803
Laughlin/Bullhead City 03:15:11 -29.4 Dark Down 63.2 78.6 Up 03:00:11 - 03:30:11 -847
Patrick 03:15:08 -30.0 Dark Down 63.8 79.3 Up 03:00:08 - 03:30:08 -852
Kingman/Dolan Springs 03:15:10 -29.8 Dark Down 63.6 78.8 Up 03:00:10 - 03:30:10 -866
Mohave Valley 03:15:12 -29.4 Dark Down 63.2 78.1 Up 03:00:12 - 03:30:12 -874
Idyllwild 03:15:22 -27.5 Dark Down 61.2 75.5 Up 03:00:22 - 03:30:22 -896
DCO 03:15:07 -30.5 Dark Down 64.3 78.9 Up 03:00:07 - 03:30:07 -910
Lake Havasu City 03:15:12 -29.5 Dark Down 63.3 77.4 Up 03:00:12 - 03:30:12 -923
Parker 03:15:13 -29.5 Dark Down 63.2 76.7 Up 03:00:13 - 03:30:13 -959
Blythe 03:15:15 -29.2 Dark Down 62.9 75.7 Up 03:00:15 - 03:30:15 -998
Calipatria 03:15:20 -28.4 Dark Down 62.0 74.6 Up 03:00:20 - 03:30:20 -1007
Yuma 03:15:18 -29.1 Dark Down 62.6 73.9 Up 03:00:18 - 03:30:18 -1087

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, (2020/01/16 03:13UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 22.76 117
3Iot Aur       04:56:59.6 +33:09:58  2.7  7.21 109
PPM 070537     05:33:38.1 +34:43:32  6.1  1.48 101
PPM 070452     05:29:42.6 +35:22:31  6.6  0.56 102
PPM 070438     05:29:23.1 +35:53:11  9.1  0.04 102
04TX357        05:29:21.4 +35:55:32 16.1       102
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:48:49 UT

Marc W. Buie, Southwest Research Institute

RECON