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 04:42:51 UTC

J2000 position of star is 06:08:39.0 +31:05:25
Equinox of date position of star is 06:10:12.8 +31:05:05
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.
Apparent brightness V=19.7

[RECON map]
Object is 37.0 AU from the Sun and 36.2 AU from the Earth.
Apparent velocity is 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 160 seconds.
The 1-sigma cross-track error in the shadow position is 1472 km.
The sky-plane scale is 26232.3 km/arcsec.

The object has an absolute magnitude Hv=4.0
Diameter=968.3 km assuming a 5% albedo -- 48.9 sec chord
Diameter=395.3 km assuming a 30% albedo -- 20.0 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 5.0 sigma about the mid-time.
The median site spacing is 30.2 km RECON observability=1.0 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 04:43:20 -37.1 Dark Up 68.1 148.3 Up 04:29:32 - 04:57:09 -2845
Sleaford 04:42:30 -44.4 Dark Up 69.0 182.4 Up 04:28:42 - 04:56:19 -2918
Kelowna 04:43:19 -37.9 Dark Up 69.1 149.2 Up 04:29:30 - 04:57:07 -2943
Peachland 04:43:20 -37.7 Dark Up 69.1 148.4 Up 04:29:31 - 04:57:08 -2948
Summerland 04:43:20 -37.8 Dark Up 69.2 148.4 Up 04:29:31 - 04:57:08 -2965
Penticton 04:43:19 -37.9 Dark Up 69.3 148.5 Up 04:29:31 - 04:57:08 -2974
Victoria 04:43:34 -35.8 Dark Up 68.7 138.9 Up 04:29:46 - 04:57:23 -2996
Oliver 04:43:20 -38.0 Dark Up 69.6 148.0 Up 04:29:32 - 04:57:09 -3009
Anarchist Mountain Observatory 04:43:20 -38.2 Dark Up 69.8 148.2 Up 04:29:32 - 04:57:09 -3030
Okanogan 04:43:22 -38.3 Dark Up 70.3 146.8 Up 04:29:34 - 04:57:11 -3091
Brewster 04:43:23 -38.2 Dark Up 70.5 145.9 Up 04:29:35 - 04:57:12 -3114
Manson/Chelan 04:43:25 -38.0 Dark Up 70.5 144.7 Up 04:29:36 - 04:57:13 -3128
Wenatchee 04:43:26 -38.1 Dark Up 70.8 143.6 Up 04:29:38 - 04:57:15 -3172
Ellensburg 04:43:28 -38.0 Dark Up 71.1 142.3 Up 04:29:39 - 04:57:16 -3210
Yakima 04:43:28 -38.1 Dark Up 71.4 141.6 Up 04:29:40 - 04:57:17 -3251
Toppenish/White Swan 04:43:28 -38.3 Dark Up 71.6 141.6 Up 04:29:40 - 04:57:17 -3276
The Dalles 04:43:33 -38.0 Dark Up 71.9 138.2 Up 04:29:44 - 04:57:21 -3338
PNWRO 04:43:24 -39.4 Dark Up 72.5 144.5 Up 04:29:35 - 04:57:12 -3345
Maupin 04:43:33 -38.2 Dark Up 72.2 137.6 Up 04:29:44 - 04:57:21 -3383
Sisters 04:43:36 -38.0 Dark Up 72.6 134.6 Up 04:29:47 - 04:57:24 -3463
Bend 04:43:36 -38.3 Dark Up 72.9 134.6 Up 04:29:48 - 04:57:25 -3493
Oregon Observatory 04:43:37 -38.2 Dark Up 73.0 133.9 Up 04:29:49 - 04:57:26 -3508
Chiloquin 04:43:40 -38.2 Dark Up 73.6 129.7 Up 04:29:52 - 04:57:29 -3634
Klamath Falls 04:43:41 -38.3 Dark Up 73.9 129.0 Up 04:29:52 - 04:57:29 -3671
Cedarville 04:43:36 -39.6 Dark Up 75.3 130.9 Up 04:29:48 - 04:57:25 -3780
Fall River/Burney 04:43:42 -38.8 Dark Up 74.9 126.6 Up 04:29:53 - 04:57:30 -3802
Greenville 04:43:41 -39.3 Dark Up 75.7 124.8 Up 04:29:53 - 04:57:30 -3907
Gimple 04:43:41 -39.4 Dark Up 75.7 125.0 Up 04:29:52 - 04:57:29 -3909
Quincy 04:43:42 -39.3 Dark Up 75.8 124.2 Up 04:29:53 - 04:57:30 -3928
Portola 04:43:40 -39.7 Dark Up 76.1 124.9 Up 04:29:51 - 04:57:28 -3953
Reno 04:43:38 -40.2 Dark Up 76.7 125.6 Up 04:29:49 - 04:57:26 -3996
Carson City 04:43:38 -40.3 Dark Up 76.9 124.4 Up 04:29:49 - 04:57:26 -4034
Gardnerville 04:43:38 -40.4 Dark Up 77.1 123.6 Up 04:29:50 - 04:57:27 -4061
Yerington 04:43:36 -40.8 Dark Up 77.4 125.3 Up 04:29:47 - 04:57:24 -4069
Hawthorne 04:43:34 -41.3 Dark Up 78.0 125.0 Up 04:29:46 - 04:57:23 -4130
Lee Vining 04:43:37 -41.0 Dark Up 78.0 121.5 Up 04:29:49 - 04:57:26 -4179
Dunrhomin 04:42:36 -50.6 Dark Up 80.7 189.5 Up 04:28:47 - 04:56:24 -4181
Nikitin 04:42:36 -50.7 Dark Up 80.9 189.6 Up 04:28:47 - 04:56:24 -4201
CU-SBO 04:42:37 -50.6 Dark Up 81.0 189.2 Up 04:28:48 - 04:56:25 -4207
Bishop 04:43:35 -41.7 Dark Up 78.8 120.8 Up 04:29:46 - 04:57:23 -4259
Beatty 04:43:29 -43.0 Dark Up 80.2 123.4 Up 04:29:41 - 04:57:18 -4344
Patrick 04:43:18 -45.6 Dark Up 82.9 125.6 Up 04:29:30 - 04:57:07 -4564
Laughlin/Bullhead City 04:43:22 -45.1 Dark Up 82.6 121.1 Up 04:29:34 - 04:57:11 -4576
Wildwood 04:43:41 -42.0 Dark Up 80.0 104.2 Up 04:29:52 - 04:57:29 -4602
Lake Havasu City 04:43:22 -45.4 Dark Up 83.1 117.4 Up 04:29:34 - 04:57:11 -4654
Idyllwild 04:43:34 -43.6 Dark Up 81.5 105.6 Up 04:29:45 - 04:57:22 -4684
Calipatria 04:43:29 -44.6 Dark Up 82.6 103.8 Up 04:29:41 - 04:57:18 -4776
George/Scottsdale 04:43:12 -47.5 Dark Up 85.2 121.9 Up 04:29:23 - 04:57:00 -4787
Yuma 04:43:25 -45.4 Dark Up 83.4 102.2 Up 04:29:37 - 04:57:14 -4842

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 2024/03/04 05:39:27 UT

Marc W. Buie, Southwest Research Institute

RECON