RECON: TNO occultation with 04TE282

Event between 04TE282 and star GA1280:02963679 with event index number of 1363825

Geocentric closest approach at 2025/01/25 06:07:53 UTC

J2000 position of star is 06:13:40.5 +39:31:27
Equinox of date position of star is 06:15:13.5 +39:30:59
Stellar brightness G=14.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 158 degrees from the moon. Moon is 20% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 29.6 AU from the Sun and 28.8 AU from the Earth.
The TNO is moving 20.2 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 847 seconds.
The 1-sigma cross-track error in the shadow position is 4295 km.
The sky-plane scale is 20863.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=132.4 km assuming a 5% albedo -- 6.6 sec chord
Diameter=54.1 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 04TE282, (2025/01/25 06:08UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:51.0 +27:57:49  1.1 22.14 140
34Bet Aur      06:01:22.1 +44:56:50  1.9  6.02 157
40 Aur         06:08:18.8 +38:28:40  5.4  1.73 159
PPM 071380     06:16:05.1 +39:39:48  7.8  0.20 158
04TE282        06:15:25.2 +39:30:55 14.4       157
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 1.1 sigma about the mid-time.
The median site spacing is 34.5 km RECON observability=1.0 and success probability=13.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:06:48 -54.1 Dark Down 72.7 230.1 Up 05:51:48 - 06:21:48 -739
Kamloops 06:07:37 -49.6 Dark Down 78.7 191.6 Up 05:52:37 - 06:22:37 -877
Kelowna 06:07:34 -50.6 Dark Down 79.3 196.1 Up 05:52:34 - 06:22:34 -971
Peachland 06:07:35 -50.5 Dark Down 79.5 195.0 Up 05:52:35 - 06:22:35 -981
Summerland 06:07:35 -50.6 Dark Down 79.6 195.6 Up 05:52:35 - 06:22:35 -998
Penticton 06:07:34 -50.7 Dark Down 79.6 196.2 Up 05:52:34 - 06:22:34 -1006
Oliver 06:07:35 -51.0 Dark Down 80.0 196.7 Up 05:52:35 - 06:22:35 -1045
Anarchist Mountain Observatory 06:07:34 -51.2 Dark Down 80.1 197.9 Up 05:52:34 - 06:22:34 -1065
Victoria 06:07:48 -49.4 Dark Down 81.0 179.6 Up 05:52:48 - 06:22:48 -1087
Tonasket 06:07:34 -51.3 Dark Down 80.4 198.1 Up 05:52:34 - 06:22:34 -1098
Okanogan 06:07:35 -51.5 Dark Down 80.8 198.1 Up 05:52:35 - 06:22:35 -1134
Brewster 06:07:36 -51.5 Dark Down 81.1 197.7 Up 05:52:36 - 06:22:36 -1162
Manson/Chelan 06:07:37 -51.5 Dark Down 81.3 196.3 Up 05:52:37 - 06:22:37 -1183
Wenatchee 06:07:38 -51.7 Dark Down 81.8 196.3 Up 05:52:38 - 06:22:38 -1234
Ellensburg 06:07:39 -51.8 Dark Down 82.3 196.0 Up 05:52:39 - 06:22:39 -1277
Yakima 06:07:39 -52.0 Dark Down 82.7 196.7 Up 05:52:39 - 06:22:39 -1322
Toppenish/White Swan 06:07:39 -52.2 Dark Down 82.8 198.2 Up 05:52:39 - 06:22:39 -1347
PNWRO 06:07:33 -53.3 Dark Down 82.8 207.9 Up 05:52:33 - 06:22:33 -1398
Goldendale 06:07:40 -52.3 Dark Down 83.4 197.0 Up 05:52:40 - 06:22:40 -1405
The Dalles 06:07:42 -52.2 Dark Down 83.7 195.2 Up 05:52:42 - 06:22:42 -1426
Maupin 06:07:42 -52.5 Dark Down 84.1 197.0 Up 05:52:42 - 06:22:42 -1473
Sisters 06:07:44 -52.7 Dark Down 85.1 195.8 Up 05:52:44 - 06:22:44 -1566
Bend 06:07:43 -53.0 Dark Down 85.2 198.9 Up 05:52:43 - 06:22:43 -1595
Oregon Observatory 06:07:44 -53.0 Dark Down 85.4 198.4 Up 05:52:44 - 06:22:44 -1613
North Lake 06:07:42 -53.7 Dark Down 85.9 206.7 Up 05:52:42 - 06:22:42 -1688
Chiloquin 06:07:46 -53.5 Dark Down 86.8 200.5 Up 05:52:46 - 06:22:46 -1754
Klamath Falls 06:07:46 -53.7 Dark Down 87.1 203.9 Up 05:52:46 - 06:22:46 -1793
Lakeview 06:07:41 -54.6 Dark Down 86.5 221.0 Up 05:52:41 - 06:22:41 -1809
Cedarville 06:07:40 -55.1 Dark Down 86.9 230.9 Up 05:52:40 - 06:22:40 -1883
Fall River/Burney 06:07:45 -54.5 Dark Down 87.9 224.6 Up 05:52:45 - 06:22:45 -1926
Susanville 06:07:43 -55.3 Dark Down 87.8 247.3 Up 05:52:43 - 06:22:43 -2002
Greenville 06:07:44 -55.2 Dark Down 88.1 252.1 Up 05:52:44 - 06:22:44 -2030
Gimple 06:07:44 -55.3 Dark Down 88.0 252.8 Up 05:52:44 - 06:22:44 -2031
Dunrhomin 06:06:40 -64.3 Dark Down 76.3 272.8 Up 05:51:40 - 06:21:40 -2038
Quincy 06:07:44 -55.3 Dark Down 88.1 258.0 Up 05:52:44 - 06:22:44 -2053
CU-SBO 06:06:40 -64.5 Dark Down 76.3 273.7 Up 05:51:40 - 06:21:40 -2066
Portola 06:07:42 -55.7 Dark Down 87.8 263.4 Up 05:52:42 - 06:22:42 -2071
Reno 06:07:40 -56.3 Dark Down 87.3 270.7 Up 05:52:40 - 06:22:40 -2105
Carson City 06:07:40 -56.5 Dark Down 87.3 278.2 Up 05:52:40 - 06:22:40 -2145
Yerington 06:07:37 -57.0 Dark Down 86.8 280.8 Up 05:52:37 - 06:22:37 -2171
Gardnerville 06:07:40 -56.6 Dark Down 87.2 283.1 Up 05:52:40 - 06:22:40 -2172
Hawthorne 06:07:35 -57.6 Dark Down 86.2 286.9 Up 05:52:35 - 06:22:35 -2226
Lee Vining 06:07:37 -57.5 Dark Down 86.4 296.9 Up 05:52:37 - 06:22:37 -2285
Tonopah 06:07:30 -58.7 Dark Down 85.1 289.2 Up 05:52:30 - 06:22:30 -2286
Bishop 06:07:35 -58.3 Dark Down 85.6 300.9 Up 05:52:35 - 06:22:35 -2356
Beatty 06:07:28 -59.6 Dark Down 84.3 299.2 Up 05:52:28 - 06:22:28 -2417
Indian Springs 06:07:23 -60.5 Dark Down 83.4 298.7 Up 05:52:23 - 06:22:23 -2458
Henderson 06:07:20 -61.3 Dark Down 82.6 300.6 Up 05:52:20 - 06:22:20 -2519
Patrick 06:07:16 -62.3 Dark Down 81.5 301.8 Up 05:52:16 - 06:22:16 -2592
Kingman/Dolan Springs 06:07:17 -62.3 Dark Down 81.5 303.5 Up 05:52:17 - 06:22:17 -2616
Laughlin/Bullhead City 06:07:19 -62.0 Dark Down 81.9 304.9 Up 05:52:19 - 06:22:19 -2617
Mohave Valley 06:07:19 -62.1 Dark Down 81.7 306.5 Up 05:52:19 - 06:22:19 -2647
Lake Havasu City 06:07:18 -62.5 Dark Down 81.3 307.9 Up 05:52:18 - 06:22:18 -2692
Wildwood 06:07:37 -59.5 Dark Down 83.4 326.7 Up 05:52:37 - 06:22:37 -2716
Parker 06:07:18 -62.7 Dark Down 81.1 309.6 Up 05:52:18 - 06:22:18 -2731
Idyllwild 06:07:29 -61.1 Dark Down 82.2 319.7 Up 05:52:29 - 06:22:29 -2767
George/Scottsdale 06:07:07 -64.6 Dark Down 79.2 305.9 Up 05:52:07 - 06:22:07 -2781
Calipatria 06:07:24 -62.2 Dark Down 81.1 318.1 Up 05:52:24 - 06:22:24 -2839
Yuma 06:07:20 -63.0 Dark Down 80.3 317.0 Up 05:52:20 - 06:22:20 -2890

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 04TE282, (2025/01/25 06:08UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 22.14 140
34Bet Aur      05:59:31.6 +44:56:51  1.9  6.02 157
40 Aur         06:06:35.1 +38:28:57  5.4  1.73 159
PPM 071380     06:14:20.3 +39:40:21  7.8  0.20 158
04TE282        06:13:40.5 +39:31:27 14.4       158
Positions are for J2000

Event circumstances last updated at 2022/04/04 23:13:38 UT

Marc W. Buie, Southwest Research Institute

RECON