RECON: TNO occultation with 04TX357

Event between 04TX357 and star GA1260:02396422 with event index number of 1079484

Geocentric closest approach at 2022/02/07 04:37:31 UTC

J2000 position of star is 05:52:14.3 +36:55:50
Equinox of date position of star is 05:53:33.5 +36:56:02
Stellar brightness G=14.2, use SENSEUP=64
Star is 57 degrees from the moon. Moon is 37% 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 14.5 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 1138 seconds.
The 1-sigma cross-track error in the shadow position is 4850 km.
The sky-plane scale is 20672.0 km/arcsec.

The TNO has an absolute magnitude Hv=8.7
Diameter=111.2 km assuming a 5% albedo -- 7.7 sec chord
Diameter=45.4 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 

Star training set for 04TX357, (2022/02/07 04:38UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:40.0 +27:58:16  1.1 25.34  81
34Bet Aur      06:01:09.1 +44:56:50  1.9  8.13  60
31Ups Aur      05:52:33.0 +37:18:35  6.3  0.44  57
PPM 070927     05:53:01.4 +36:34:59  9.8  0.38  57
PPM 070918     05:52:36.7 +37:10:40 10.2  0.33  57
04TX357        05:53:44.4 +36:56:04 14.2        57
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 0.8 sigma about the mid-time.
The median site spacing is 22.6 km RECON observability=1.0 and success probability=10.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 04:37:06 -34.8 Dark Up 77.0 176.9 Up 04:22:06 - 04:52:06 -1514
Summerland 04:37:08 -34.7 Dark Up 77.3 175.8 Up 04:22:08 - 04:52:08 -1538
Penticton 04:37:07 -34.8 Dark Up 77.4 176.2 Up 04:22:07 - 04:52:07 -1547
Okanagan Falls 04:37:08 -34.9 Dark Up 77.6 176.0 Up 04:22:08 - 04:52:08 -1566
Oliver 04:37:08 -34.9 Dark Up 77.7 176.1 Up 04:22:08 - 04:52:08 -1584
Anarchist Mountain Observatory 04:37:08 -35.1 Dark Up 77.9 176.8 Up 04:22:08 - 04:52:08 -1606
Oroville 04:37:08 -35.1 Dark Up 78.0 176.5 Up 04:22:08 - 04:52:08 -1612
Tonasket 04:37:09 -35.1 Dark Up 78.2 176.4 Up 04:22:09 - 04:52:09 -1636
Okanogan 04:37:11 -35.2 Dark Up 78.5 175.7 Up 04:22:11 - 04:52:11 -1667
Brewster 04:37:12 -35.1 Dark Up 78.8 174.8 Up 04:22:12 - 04:52:12 -1690
Manson/Chelan 04:37:14 -35.0 Dark Up 79.0 173.2 Up 04:22:14 - 04:52:14 -1703
Entiat 04:37:15 -35.0 Dark Up 79.2 172.8 Up 04:22:15 - 04:52:15 -1724
Wenatchee 04:37:16 -35.0 Dark Up 79.4 172.2 Up 04:22:16 - 04:52:16 -1748
Ellensburg 04:37:18 -35.0 Dark Up 79.8 170.9 Up 04:22:18 - 04:52:18 -1785
Yakima 04:37:19 -35.1 Dark Up 80.2 170.5 Up 04:22:19 - 04:52:19 -1827
Toppenish/White Swan 04:37:18 -35.2 Dark Up 80.5 171.1 Up 04:22:18 - 04:52:18 -1854
Pasco 04:37:13 -36.1 Dark Up 80.7 177.1 Up 04:22:13 - 04:52:13 -1897
Goldendale 04:37:23 -35.1 Dark Up 81.0 168.5 Up 04:22:23 - 04:52:23 -1900
The Dalles 04:37:25 -34.9 Dark Up 81.1 166.4 Up 04:22:25 - 04:52:25 -1914
George/Umatilla 04:37:15 -36.1 Dark Up 81.0 175.9 Up 04:22:15 - 04:52:15 -1927
PNWRO 04:37:13 -36.3 Dark Up 80.9 178.2 Up 04:22:13 - 04:52:13 -1929
Maupin 04:37:25 -35.1 Dark Up 81.5 166.3 Up 04:22:25 - 04:52:25 -1960
Madras/Culver 04:37:27 -35.2 Dark Up 82.1 165.2 Up 04:22:27 - 04:52:27 -2016
Sisters 04:37:30 -35.0 Dark Up 82.3 162.0 Up 04:22:30 - 04:52:30 -2038
Redmond 04:37:28 -35.3 Dark Up 82.4 164.2 Up 04:22:28 - 04:52:28 -2052
Bend 04:37:30 -35.2 Dark Up 82.6 163.0 Up 04:22:30 - 04:52:30 -2070
Oregon Observatory 04:37:30 -35.2 Dark Up 82.7 161.8 Up 04:22:30 - 04:52:30 -2085
La Pine/Gilchrist 04:37:32 -35.2 Dark Up 82.9 160.9 Up 04:22:32 - 04:52:32 -2104
North Lake 04:37:30 -35.7 Dark Up 83.4 163.7 Up 04:22:30 - 04:52:30 -2166
Chiloquin 04:37:36 -35.2 Dark Up 83.8 155.2 Up 04:22:36 - 04:52:36 -2210
Paisley 04:37:29 -36.1 Dark Up 84.0 164.9 Up 04:22:29 - 04:52:29 -2233
Klamath Falls 04:37:37 -35.3 Dark Up 84.2 154.3 Up 04:22:37 - 04:52:37 -2248
Tulelake 04:37:36 -35.6 Dark Up 84.5 155.4 Up 04:22:36 - 04:52:36 -2284
Lakeview 04:37:29 -36.3 Dark Up 84.6 165.1 Up 04:22:29 - 04:52:29 -2291
Cedarville 04:37:29 -36.6 Dark Up 85.2 164.7 Up 04:22:29 - 04:52:29 -2364
Fall River/Burney 04:37:38 -35.8 Dark Up 85.4 151.6 Up 04:22:38 - 04:52:38 -2381
Susanville 04:37:34 -36.5 Dark Up 86.2 154.9 Up 04:22:34 - 04:52:34 -2468
Greenville 04:37:37 -36.3 Dark Up 86.3 149.8 Up 04:22:37 - 04:52:37 -2489
Gimple 04:37:37 -36.4 Dark Up 86.3 150.7 Up 04:22:37 - 04:52:37 -2491
Quincy 04:37:38 -36.4 Dark Up 86.5 148.2 Up 04:22:38 - 04:52:38 -2510
Portola 04:37:35 -36.8 Dark Up 86.8 152.8 Up 04:22:35 - 04:52:35 -2537
Reno 04:37:33 -37.3 Dark Up 87.2 159.8 Up 04:22:33 - 04:52:33 -2582
Carson City 04:37:32 -37.4 Dark Up 87.6 157.2 Up 04:22:32 - 04:52:32 -2621
Gardnerville 04:37:33 -37.5 Dark Up 87.8 155.7 Up 04:22:33 - 04:52:33 -2648
Yerington 04:37:30 -37.9 Dark Up 87.9 167.8 Up 04:22:30 - 04:52:30 -2658
Hawthorne 04:37:28 -38.4 Dark Up 88.4 179.1 Up 04:22:28 - 04:52:28 -2722
Lee Vining 04:37:33 -38.1 Dark Up 88.9 158.6 Up 04:22:33 - 04:52:33 -2768
Tonopah 04:37:21 -39.6 Dark Up 88.4 224.0 Up 04:22:21 - 04:52:21 -2808
Niwot 04:36:10 -47.6 Dark Up 79.3 257.0 Up 04:21:10 - 04:51:10 -2829
SwRI 04:36:11 -47.6 Dark Up 79.4 257.3 Up 04:21:11 - 04:51:11 -2839
Bishop 04:37:30 -38.8 Dark Up 89.5 201.2 Up 04:22:30 - 04:52:30 -2851
Lone Pine 04:37:30 -39.2 Dark Up 89.5 307.2 Up 04:22:30 - 04:52:30 -2940
Beatty 04:37:21 -40.1 Dark Up 88.6 271.7 Up 04:22:21 - 04:52:21 -2943
CPSLO 04:37:46 -37.4 Dark Up 87.7 44.1 Up 04:22:46 - 04:52:46 -3004
Indian Springs 04:37:15 -41.0 Dark Up 87.7 279.7 Up 04:22:15 - 04:52:15 -3005
Henderson 04:37:13 -41.7 Dark Up 87.0 288.4 Up 04:22:13 - 04:52:13 -3079
Searchlight/Boulder City 04:37:14 -41.9 Dark Up 86.7 297.7 Up 04:22:14 - 04:52:14 -3142
Patrick 04:37:08 -42.7 Dark Up 86.0 293.4 Up 04:22:08 - 04:52:08 -3173
Laughlin/Bullhead City 04:37:13 -42.2 Dark Up 86.3 300.0 Up 04:22:13 - 04:52:13 -3182
Wildwood 04:37:38 -39.2 Dark Up 87.2 359.4 Up 04:22:38 - 04:52:38 -3191
Kingman/Dolan Springs 04:37:09 -42.6 Dark Up 86.0 297.1 Up 04:22:09 - 04:52:09 -3192
Mohave Valley 04:37:13 -42.3 Dark Up 86.2 303.5 Up 04:22:13 - 04:52:13 -3211
DCO 04:37:04 -43.3 Dark Up 85.3 294.5 Up 04:22:04 - 04:52:04 -3222
Lake Havasu City 04:37:12 -42.5 Dark Up 85.8 306.7 Up 04:22:12 - 04:52:12 -3260
Idyllwild 04:37:28 -40.8 Dark Up 86.5 334.9 Up 04:22:28 - 04:52:28 -3280
Parker 04:37:12 -42.6 Dark Up 85.6 310.1 Up 04:22:12 - 04:52:12 -3298
Blythe 04:37:16 -42.5 Dark Up 85.4 316.9 Up 04:22:16 - 04:52:16 -3347
Calipatria 04:37:22 -41.8 Dark Up 85.5 327.6 Up 04:22:22 - 04:52:22 -3376
Yuma 04:37:17 -42.6 Dark Up 84.7 323.9 Up 04:22:17 - 04:52:17 -3445

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, (2022/02/07 04:38UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 25.34  81
34Bet Aur      05:59:31.6 +44:56:51  1.9  8.13  60
31Ups Aur      05:51:02.5 +37:18:19  6.3  0.44  57
PPM 070927     05:51:31.5 +36:34:44  9.8  0.38  57
PPM 070918     05:51:06.3 +37:10:25 10.2  0.33  57
04TX357        05:52:14.3 +36:55:50 14.2        57
Positions are for J2000

Event circumstances last updated at 2019/06/08 03:02:50 UT

Marc W. Buie, Southwest Research Institute

RECON