RECON: TNO occultation with 84922

Event between (84922) 03VS2 and star GA1200:02309957 with event index number of 2405398

Geocentric closest approach at 2026/01/29 04:47:57 UTC

J2000 position of star is 06:08:39.0 +31:05:25
Equinox of date position of star is 06:10:05.5 +31:05:07
Stellar brightness G=14.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 13 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=19.7

[RECON map]
TNO is 37.0 AU from the Sun and 36.2 AU from the Earth.
The TNO is moving 19.6 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 175 seconds.
The 1-sigma cross-track error in the shadow position is 1546 km.
The sky-plane scale is 26232.0 km/arcsec.

The TNO has an absolute magnitude Hv=4.0
Diameter=968.3 km assuming a 5% albedo -- 49.3 sec chord
Diameter=395.3 km assuming a 30% albedo -- 20.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 84922, (2026/01/29 04:44UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:54.7 +27:57:40  1.1 21.20  34
Alnath         05:27:56.6 +28:37:38  1.6  9.51   3
PPM 071108     06:02:51.1 +31:01:59  6.0  1.60  11
PPM 071271     06:10:48.0 +31:15:33  8.1  0.20  13
PPM 071262     06:10:06.1 +31:11:49  8.9  0.12  13
84922          06:10:20.2 +31:05:03 14.7        13
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 5.1 sigma about the mid-time.
The median site spacing is 30.1 km RECON observability=1.0 and success probability=33.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 04:48:22 -37.8 Dark Up 68.5 151.0 Up 04:33:22 - 05:03:22 194
Sleaford 04:47:31 -45.1 Dark Up 68.9 185.4 Up 04:32:31 - 05:02:31 132
Kelowna 04:48:21 -38.6 Dark Up 69.5 152.0 Up 04:33:21 - 05:03:21 96
Peachland 04:48:22 -38.5 Dark Up 69.5 151.2 Up 04:33:22 - 05:03:22 90
Summerland 04:48:22 -38.6 Dark Up 69.6 151.2 Up 04:33:22 - 05:03:22 74
Penticton 04:48:21 -38.7 Dark Up 69.7 151.4 Up 04:33:21 - 05:03:21 65
Victoria 04:48:37 -36.6 Dark Up 69.2 141.5 Up 04:33:37 - 05:03:37 40
Oliver 04:48:22 -38.8 Dark Up 70.0 150.9 Up 04:33:22 - 05:03:22 29
Anarchist Mountain Observatory 04:48:22 -39.0 Dark Up 70.3 151.1 Up 04:33:22 - 05:03:22 9
Tonasket 04:48:22 -39.0 Dark Up 70.5 150.6 Up 04:33:22 - 05:03:22 -21
Okanogan 04:48:23 -39.1 Dark Up 70.7 149.7 Up 04:33:23 - 05:03:23 -53
Brewster 04:48:25 -39.0 Dark Up 70.9 148.9 Up 04:33:25 - 05:03:25 -76
Manson/Chelan 04:48:26 -38.8 Dark Up 71.0 147.7 Up 04:33:26 - 05:03:26 -90
Wenatchee 04:48:28 -38.9 Dark Up 71.3 146.5 Up 04:33:28 - 05:03:28 -135
Ellensburg 04:48:29 -38.9 Dark Up 71.6 145.3 Up 04:33:29 - 05:03:29 -173
Yakima 04:48:30 -39.0 Dark Up 71.9 144.6 Up 04:33:30 - 05:03:30 -214
Toppenish/White Swan 04:48:30 -39.1 Dark Up 72.1 144.6 Up 04:33:30 - 05:03:30 -239
Goldendale 04:48:32 -39.0 Dark Up 72.4 142.6 Up 04:33:32 - 05:03:32 -287
The Dalles 04:48:34 -38.8 Dark Up 72.4 141.2 Up 04:33:34 - 05:03:34 -303
PNWRO 04:48:25 -40.2 Dark Up 73.0 147.7 Up 04:33:25 - 05:03:25 -307
Maupin 04:48:34 -39.0 Dark Up 72.8 140.7 Up 04:33:34 - 05:03:34 -348
Sisters 04:48:38 -38.9 Dark Up 73.2 137.6 Up 04:33:38 - 05:03:38 -428
Bend 04:48:37 -39.1 Dark Up 73.5 137.7 Up 04:33:37 - 05:03:37 -458
Oregon Observatory 04:48:38 -39.1 Dark Up 73.6 137.0 Up 04:33:38 - 05:03:38 -473
North Lake 04:48:37 -39.6 Dark Up 74.3 136.8 Up 04:33:37 - 05:03:37 -551
Chiloquin 04:48:42 -39.1 Dark Up 74.3 132.7 Up 04:33:42 - 05:03:42 -600
Klamath Falls 04:48:42 -39.2 Dark Up 74.6 132.0 Up 04:33:42 - 05:03:42 -637
Lakeview 04:48:36 -40.2 Dark Up 75.4 135.5 Up 04:33:36 - 05:03:36 -673
Cedarville 04:48:37 -40.5 Dark Up 75.9 134.2 Up 04:33:37 - 05:03:37 -745
Fall River/Burney 04:48:42 -39.7 Dark Up 75.6 129.6 Up 04:33:42 - 05:03:42 -769
Susanville 04:48:41 -40.4 Dark Up 76.4 129.6 Up 04:33:41 - 05:03:41 -851
Greenville 04:48:42 -40.2 Dark Up 76.4 127.9 Up 04:33:42 - 05:03:42 -874
Gimple 04:48:42 -40.3 Dark Up 76.5 128.1 Up 04:33:42 - 05:03:42 -876
Quincy 04:48:43 -40.3 Dark Up 76.6 127.3 Up 04:33:43 - 05:03:43 -895
Portola 04:48:41 -40.7 Dark Up 76.9 128.1 Up 04:33:41 - 05:03:41 -919
Reno 04:48:39 -41.2 Dark Up 77.5 128.9 Up 04:33:39 - 05:03:39 -961
Carson City 04:48:39 -41.3 Dark Up 77.7 127.7 Up 04:33:39 - 05:03:39 -1000
Gardnerville 04:48:39 -41.4 Dark Up 77.9 127.0 Up 04:33:39 - 05:03:39 -1027
Yerington 04:48:37 -41.8 Dark Up 78.2 128.8 Up 04:33:37 - 05:03:37 -1034
Hawthorne 04:48:36 -42.3 Dark Up 78.8 128.6 Up 04:33:36 - 05:03:36 -1095
Dunrhomin 04:47:37 -51.5 Dark Up 80.5 196.0 Up 04:32:37 - 05:02:37 -1133
Lee Vining 04:48:38 -42.0 Dark Up 78.9 124.9 Up 04:33:38 - 05:03:38 -1144
CU-SBO 04:47:37 -51.5 Dark Up 80.8 195.9 Up 04:32:37 - 05:02:37 -1159
Tonopah 04:48:30 -43.4 Dark Up 80.0 131.3 Up 04:33:30 - 05:03:30 -1175
Bishop 04:48:36 -42.7 Dark Up 79.7 124.4 Up 04:33:36 - 05:03:36 -1224
Beatty 04:48:30 -44.0 Dark Up 81.0 127.6 Up 04:33:30 - 05:03:30 -1308
Indian Springs 04:48:25 -44.9 Dark Up 81.8 130.1 Up 04:33:25 - 05:03:25 -1365
Henderson 04:48:23 -45.6 Dark Up 82.6 130.2 Up 04:33:23 - 05:03:23 -1437
Patrick 04:48:19 -46.6 Dark Up 83.7 131.7 Up 04:33:19 - 05:03:19 -1526
Laughlin/Bullhead City 04:48:23 -46.1 Dark Up 83.4 126.5 Up 04:33:23 - 05:03:23 -1539
Kingman/Dolan Springs 04:48:20 -46.5 Dark Up 83.7 129.2 Up 04:33:20 - 05:03:20 -1546
Mohave Valley 04:48:23 -46.1 Dark Up 83.6 124.6 Up 04:33:23 - 05:03:23 -1568
Wildwood 04:48:42 -43.0 Dark Up 81.0 106.6 Up 04:33:42 - 05:03:42 -1569
Lake Havasu City 04:48:22 -46.4 Dark Up 84.0 122.7 Up 04:33:22 - 05:03:22 -1616
Idyllwild 04:48:34 -44.6 Dark Up 82.5 108.5 Up 04:33:34 - 05:03:34 -1649
Parker 04:48:23 -46.5 Dark Up 84.2 119.9 Up 04:33:23 - 05:03:23 -1655
Calipatria 04:48:29 -45.6 Dark Up 83.6 106.8 Up 04:33:29 - 05:03:29 -1740
George/Scottsdale 04:48:12 -48.5 Dark Up 86.0 130.6 Up 04:33:12 - 05:03:12 -1747
Yuma 04:48:26 -46.4 Dark Up 84.5 105.2 Up 04:33:26 - 05:03:26 -1805

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 84922, (2026/01/29 04:44UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 21.20  34
Alnath         05:26:17.6 +28:36:23  1.6  9.51   3
PPM 071108     06:01:10.0 +31:02:04  6.0  1.60  11
PPM 071271     06:09:06.7 +31:15:55  8.1  0.20  13
PPM 071262     06:08:24.9 +31:12:11  8.9  0.12  13
84922          06:08:39.0 +31:05:25 14.7        13
Positions are for J2000

Event circumstances last updated at 2022/04/18 23:18:00 UT

Marc W. Buie, Southwest Research Institute

RECON