RECON: TNO occultation with 612203

Event between (612203) 00WT169 and star GA1120:02585989 with event index number of 2809306

Geocentric closest approach at 2029/01/28 02:43:43 UTC

J2000 position of star is 06:48:36.0 +22:41:52
Equinox of date position of star is 06:49:57.2 +22:40:16
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 1 degrees from the moon. Moon is 94% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 45.2 AU from the Sun and 44.3 AU from the Earth.
The TNO is moving 22.6 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 899 seconds.
The 1-sigma cross-track error in the shadow position is 2266 km.
The sky-plane scale is 32114.8 km/arcsec.

The TNO has an absolute magnitude Hv=6.1
Diameter=356.5 km assuming a 5% albedo -- 15.7 sec chord
Diameter=145.5 km assuming a 30% albedo -- 6.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 612203, (2029/01/28 02:44UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:05.8 +27:57:13  1.1 13.86  14
Alhena         06:39:23.5 +16:22:19  1.9  6.80   7
36 Gem         06:53:17.5 +21:43:27  5.3  1.16   2
PPM 096582     06:50:54.2 +23:10:00  7.3  0.52   1
PPM 096595     06:51:27.1 +22:48:16  8.9  0.29   1
PPM 096570     06:50:25.0 +22:32:35 10.1  0.12   1
612203         06:50:21.3 +22:39:47 16.7         1
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 1.0 sigma about the mid-time.
The median site spacing is 27.7 km RECON observability=1.0 and success probability=0.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 02:46:24 -19.0 Dark Up 40.4 103.9 Up 02:31:24 - 03:01:24 9575
Sleaford 02:45:49 -27.9 Dark Up 48.2 119.5 Up 02:30:49 - 03:00:49 9494
Kelowna 02:46:23 -19.4 Dark Up 41.2 104.0 Up 02:31:23 - 03:01:23 9485
Peachland 02:46:24 -19.2 Dark Up 41.0 103.6 Up 02:31:24 - 03:01:24 9480
Summerland 02:46:25 -19.3 Dark Up 41.1 103.6 Up 02:31:25 - 03:01:25 9464
Penticton 02:46:26 -19.4 Dark Up 41.2 103.6 Up 02:31:26 - 03:01:26 9456
Victoria 02:46:35 -16.7 AT Up 38.9 99.5 Up 02:31:35 - 03:01:35 9435
Oliver 02:46:26 -19.3 Dark Up 41.3 103.3 Up 02:31:26 - 03:01:26 9423
Anarchist Mountain Observatory 02:46:26 -19.4 Dark Up 41.4 103.4 Up 02:31:26 - 03:01:26 9404
Tonasket 02:46:26 -19.4 Dark Up 41.5 103.0 Up 02:31:26 - 03:01:26 9376
Okanogan 02:46:28 -19.2 Dark Up 41.4 102.6 Up 02:31:28 - 03:01:28 9348
Brewster 02:46:29 -19.1 Dark Up 41.4 102.2 Up 02:31:29 - 03:01:29 9326
Manson/Chelan 02:46:31 -18.8 Dark Up 41.2 101.7 Up 02:31:31 - 03:01:31 9313
Wenatchee 02:46:33 -18.6 Dark Up 41.2 101.2 Up 02:31:33 - 03:01:33 9272
Ellensburg 02:46:34 -18.4 Dark Up 41.1 100.6 Up 02:31:34 - 03:01:34 9237
Yakima 02:46:35 -18.4 Dark Up 41.2 100.3 Up 02:31:35 - 03:01:35 9199
Toppenish/White Swan 02:46:35 -18.5 Dark Up 41.3 100.2 Up 02:31:35 - 03:01:35 9175
Goldendale 02:46:37 -18.1 Dark Up 41.1 99.4 Up 02:31:37 - 03:01:37 9131
The Dalles 02:46:38 -17.8 AT Up 40.9 98.9 Up 02:31:38 - 03:01:38 9116
PNWRO 02:46:32 -19.5 Dark Up 42.4 101.2 Up 02:31:32 - 03:01:32 9111
Maupin 02:46:40 -17.9 AT Up 41.1 98.7 Up 02:31:40 - 03:01:40 9074
Sisters 02:46:42 -17.4 AT Up 40.8 97.5 Up 02:31:42 - 03:01:42 9000
Bend 02:46:42 -17.5 AT Up 41.1 97.5 Up 02:31:42 - 03:01:42 8971
Oregon Observatory 02:46:43 -17.4 AT Up 41.0 97.3 Up 02:31:43 - 03:01:43 8958
North Lake 02:46:43 -17.7 AT Up 41.5 97.1 Up 02:31:43 - 03:01:43 8884
Chiloquin 02:46:47 -16.9 AT Up 40.8 95.8 Up 02:31:47 - 03:01:47 8838
Klamath Falls 02:46:47 -16.9 AT Up 40.9 95.6 Up 02:31:47 - 03:01:47 8803
Lakeview 02:46:44 -18.0 AT Up 42.0 96.6 Up 02:31:44 - 03:01:44 8769
Cedarville 02:46:46 -18.0 Dark Up 42.2 96.2 Up 02:31:46 - 03:01:46 8701
Fall River/Burney 02:46:49 -17.0 AT Up 41.3 94.8 Up 02:31:49 - 03:01:49 8678
Susanville 02:46:50 -17.5 AT Up 42.0 94.8 Up 02:31:50 - 03:01:50 8600
Greenville 02:46:50 -17.2 AT Up 41.8 94.4 Up 02:31:50 - 03:01:50 8579
Gimple 02:46:50 -17.3 AT Up 41.8 94.4 Up 02:31:50 - 03:01:50 8577
Quincy 02:46:51 -17.2 AT Up 41.8 94.2 Up 02:31:51 - 03:01:51 8558
Portola 02:46:49 -17.5 AT Up 42.1 94.4 Up 02:31:49 - 03:01:49 8536
Reno 02:46:49 -18.0 AT Up 42.7 94.6 Up 02:31:49 - 03:01:49 8495
Carson City 02:46:49 -17.9 AT Up 42.7 94.3 Up 02:31:49 - 03:01:49 8458
Gardnerville 02:46:51 -17.9 AT Up 42.8 94.1 Up 02:31:51 - 03:01:51 8433
Yerington 02:46:48 -18.4 Dark Up 43.2 94.6 Up 02:31:48 - 03:01:48 8425
Hawthorne 02:46:48 -18.7 Dark Up 43.7 94.5 Up 02:31:48 - 03:01:48 8367
Lee Vining 02:46:50 -18.3 Dark Up 43.3 93.6 Up 02:31:50 - 03:01:50 8320
Dunrhomin 02:46:07 -29.1 Dark Up 53.4 107.0 Up 02:31:07 - 03:01:07 8309
Tonopah 02:46:45 -19.7 Dark Up 44.8 95.0 Up 02:31:45 - 03:01:45 8290
CU-SBO 02:46:08 -29.0 Dark Up 53.4 106.6 Up 02:31:08 - 03:01:08 8285
Bishop 02:46:51 -18.7 Dark Up 43.9 93.5 Up 02:31:51 - 03:01:51 8244
Beatty 02:46:46 -19.9 Dark Up 45.3 94.1 Up 02:31:46 - 03:01:46 8162
Indian Springs 02:46:44 -20.8 Dark Up 46.1 94.5 Up 02:31:44 - 03:01:44 8106
Henderson 02:46:44 -21.2 Dark Up 46.7 94.4 Up 02:31:44 - 03:01:44 8037
Patrick 02:46:41 -22.0 Dark Up 47.7 94.4 Up 02:31:41 - 03:01:41 7949
Laughlin/Bullhead City 02:46:43 -21.5 Dark Up 47.1 93.7 Up 02:31:43 - 03:01:43 7938
Kingman/Dolan Springs 02:46:42 -21.9 Dark Up 47.5 94.1 Up 02:31:42 - 03:01:42 7930
Wildwood 02:46:56 -18.1 Dark Up 43.9 90.3 Up 02:31:56 - 03:01:56 7910
Mohave Valley 02:46:44 -21.4 Dark Up 47.2 93.4 Up 02:31:44 - 03:01:44 7909
Lake Havasu City 02:46:44 -21.6 Dark Up 47.4 93.2 Up 02:31:44 - 03:01:44 7862
Idyllwild 02:46:51 -19.5 Dark Up 45.5 91.0 Up 02:31:51 - 03:01:51 7832
Parker 02:46:44 -21.5 Dark Up 47.4 92.8 Up 02:31:44 - 03:01:44 7825
Calipatria 02:46:49 -20.4 Dark Up 46.4 91.0 Up 02:31:49 - 03:01:49 7743
George/Scottsdale 02:46:37 -23.5 Dark Up 49.4 93.8 Up 02:31:37 - 03:01:37 7733
Yuma 02:46:47 -21.1 Dark Up 47.2 91.0 Up 02:31:47 - 03:01:47 7679

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 612203, (2029/01/28 02:44UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 13.86  14
Alhena         06:37:42.8 +16:23:56  1.9  6.80   7
36 Gem         06:51:33.0 +21:45:39  5.3  1.16   2
PPM 096582     06:49:08.6 +23:12:06  7.3  0.52   1
PPM 096595     06:49:41.8 +22:50:24  8.9  0.29   1
PPM 096570     06:48:39.9 +22:34:40 10.1  0.12   1
612203         06:48:36.0 +22:41:52 16.7         1
Positions are for J2000

Event circumstances last updated at 2022/06/04 23:01:48 UT

Marc W. Buie, Southwest Research Institute

RECON