RECON: TNO occultation with 456826

Event between (456826) 07TH422 and star GA1100:01701841 with event index number of 2287747

Geocentric closest approach at 2023/01/08 09:59:46 UTC

J2000 position of star is 06:03:18.0 +20:37:25
Equinox of date position of star is 06:04:39.4 +20:37:17
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 34 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 30.1 AU from the Sun and 29.2 AU from the Earth.
The TNO is moving 24.0 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 230 seconds.
The 1-sigma cross-track error in the shadow position is 3221 km.
The sky-plane scale is 21146.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 7.6 sec chord
Diameter=75.3 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 456826, (2023/01/08 10:00UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:25.1 +07:24:34  0.4 13.36  40
Alhena         06:39:02.5 +16:22:40  1.9  9.18  27
62Chi2Ori      06:05:17.3 +20:08:09  4.5  0.51  34
PPM 095290     06:04:29.3 +20:35:03  7.7  0.06  34
456826         06:04:40.4 +20:37:17 14.9        33
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 3.9 sigma about the mid-time.
The median site spacing is 19.4 km RECON observability=1.0 and success probability=13.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:57:48 -46.2 Dark Up 34.2 259.7 Up 09:42:48 - 10:12:48 3609
Kamloops 09:58:07 -54.4 Dark Up 43.2 247.5 Up 09:43:07 - 10:13:07 3143
Kelowna 09:58:03 -54.5 Dark Up 42.9 249.1 Up 09:43:03 - 10:13:03 3102
Peachland 09:58:03 -54.7 Dark Up 43.2 248.9 Up 09:43:03 - 10:13:03 3085
Summerland 09:58:03 -54.8 Dark Up 43.2 249.1 Up 09:43:03 - 10:13:03 3076
Penticton 09:58:02 -54.8 Dark Up 43.1 249.3 Up 09:43:02 - 10:13:02 3074
Oliver 09:58:01 -55.0 Dark Up 43.3 249.6 Up 09:43:01 - 10:13:01 3046
Anarchist Mountain Observatory 09:58:00 -55.0 Dark Up 43.2 249.9 Up 09:43:00 - 10:13:00 3038
Tonasket 09:57:59 -55.2 Dark Up 43.3 250.1 Up 09:42:59 - 10:12:59 3011
Okanogan 09:57:59 -55.5 Dark Up 43.6 250.2 Up 09:42:59 - 10:12:59 2980
Brewster 09:57:58 -55.8 Dark Up 43.8 250.3 Up 09:42:58 - 10:12:58 2953
Manson/Chelan 09:57:58 -56.1 Dark Up 44.1 250.1 Up 09:42:58 - 10:12:58 2927
Victoria 09:58:07 -57.3 Dark Up 45.8 246.3 Up 09:43:07 - 10:13:07 2895
Wenatchee 09:57:57 -56.5 Dark Up 44.3 250.4 Up 09:42:57 - 10:12:57 2884
Ellensburg 09:57:57 -56.9 Dark Up 44.6 250.6 Up 09:42:57 - 10:12:57 2844
Yakima 09:57:55 -57.2 Dark Up 44.8 250.9 Up 09:42:55 - 10:12:55 2810
PNWRO 09:57:50 -56.6 Dark Up 43.9 253.0 Up 09:42:50 - 10:12:50 2807
Toppenish/White Swan 09:57:54 -57.2 Dark Up 44.7 251.3 Up 09:42:54 - 10:12:54 2797
Dunrhomin 09:57:08 -50.0 Dark Up 35.0 268.3 Up 09:42:08 - 10:12:08 2740
Goldendale 09:57:54 -57.8 Dark Up 45.2 251.4 Up 09:42:54 - 10:12:54 2740
CU-SBO 09:57:07 -50.1 Dark Up 35.1 268.4 Up 09:42:07 - 10:12:07 2717
The Dalles 09:57:54 -58.1 Dark Up 45.5 251.3 Up 09:42:54 - 10:12:54 2711
Maupin 09:57:53 -58.3 Dark Up 45.6 251.8 Up 09:42:53 - 10:12:53 2679
Sisters 09:57:51 -59.2 Dark Up 46.2 252.2 Up 09:42:51 - 10:12:51 2591
Bend 09:57:50 -59.1 Dark Up 46.1 252.6 Up 09:42:50 - 10:12:50 2577
Oregon Observatory 09:57:49 -59.3 Dark Up 46.2 252.7 Up 09:42:49 - 10:12:49 2559
North Lake 09:57:46 -59.4 Dark Up 46.0 253.8 Up 09:42:46 - 10:12:46 2519
Lakeview 09:57:42 -59.6 Dark Up 45.9 255.3 Up 09:42:42 - 10:12:42 2443
Chiloquin 09:57:47 -60.3 Dark Up 46.9 253.6 Up 09:42:47 - 10:12:47 2433
Klamath Falls 09:57:46 -60.5 Dark Up 46.9 254.1 Up 09:42:46 - 10:12:46 2406
Cedarville 09:57:40 -59.9 Dark Up 46.0 256.1 Up 09:42:40 - 10:12:40 2391
Fall River/Burney 09:57:42 -60.9 Dark Up 47.0 255.6 Up 09:42:42 - 10:12:42 2313
Susanville 09:57:38 -60.8 Dark Up 46.6 256.9 Up 09:42:38 - 10:12:38 2278
Gimple 09:57:38 -61.0 Dark Up 46.8 257.0 Up 09:42:38 - 10:12:38 2247
Greenville 09:57:39 -61.1 Dark Up 46.9 256.9 Up 09:42:39 - 10:12:39 2245
Portola 09:57:36 -60.9 Dark Up 46.6 257.6 Up 09:42:36 - 10:12:36 2230
Quincy 09:57:38 -61.2 Dark Up 46.9 257.1 Up 09:42:38 - 10:12:38 2227
Reno 09:57:34 -60.6 Dark Up 46.2 258.4 Up 09:42:34 - 10:12:34 2226
Yerington 09:57:31 -60.4 Dark Up 45.8 259.5 Up 09:42:31 - 10:12:31 2196
Carson City 09:57:33 -60.8 Dark Up 46.2 258.8 Up 09:42:33 - 10:12:33 2194
Gardnerville 09:57:33 -60.9 Dark Up 46.3 259.1 Up 09:42:33 - 10:12:33 2174
Tonopah 09:57:24 -59.5 Dark Up 44.5 261.9 Up 09:42:24 - 10:12:24 2172
Hawthorne 09:57:29 -60.3 Dark Up 45.5 260.4 Up 09:42:29 - 10:12:29 2170
Lee Vining 09:57:28 -60.9 Dark Up 46.0 260.6 Up 09:42:28 - 10:12:28 2105
Indian Springs 09:57:17 -58.9 Dark Up 43.5 264.3 Up 09:42:17 - 10:12:17 2087
Beatty 09:57:20 -59.6 Dark Up 44.3 263.3 Up 09:42:20 - 10:12:20 2082
Bishop 09:57:25 -60.6 Dark Up 45.5 261.7 Up 09:42:25 - 10:12:25 2073
Henderson 09:57:14 -58.5 Dark Up 43.0 265.3 Up 09:42:14 - 10:12:14 2060
Patrick 09:57:10 -57.8 Dark Up 42.1 266.6 Up 09:42:10 - 10:12:10 2040
Kingman/Dolan Springs 09:57:09 -58.0 Dark Up 42.3 266.6 Up 09:42:09 - 10:12:09 2014
Laughlin/Bullhead City 09:57:11 -58.4 Dark Up 42.7 266.3 Up 09:42:11 - 10:12:11 1994
Mohave Valley 09:57:10 -58.5 Dark Up 42.7 266.6 Up 09:42:10 - 10:12:10 1970
George/Scottsdale 09:57:01 -56.6 Dark Up 40.5 269.2 Up 09:42:01 - 10:12:01 1953
Lake Havasu City 09:57:08 -58.4 Dark Up 42.5 267.1 Up 09:42:08 - 10:12:08 1941
Parker 09:57:08 -58.5 Dark Up 42.5 267.4 Up 09:42:08 - 10:12:08 1910
Idyllwild 09:57:12 -60.5 Dark Up 44.5 266.4 Up 09:42:12 - 10:12:12 1793
Calipatria 09:57:08 -59.7 Dark Up 43.6 267.7 Up 09:42:08 - 10:12:08 1775
Yuma 09:57:05 -59.1 Dark Up 42.9 268.6 Up 09:42:05 - 10:12:05 1764
Wildwood 09:57:17 -61.9 Dark Up 46.1 264.9 Up 09:42:17 - 10:12:17 1764

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 456826, (2023/01/08 10:00UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 13.36  40
Alhena         06:37:42.8 +16:23:57  1.9  9.18  27
62Chi2Ori      06:03:55.2 +20:08:18  4.5  0.51  34
PPM 095290     06:03:06.9 +20:35:11  7.7  0.06  34
456826         06:03:18.0 +20:37:25 14.9        34
Positions are for J2000

Event circumstances last updated at 2022/10/02 04:12:43 UT

Marc W. Buie, Southwest Research Institute

RECON