RECON: TNO occultation with 250112

Event between (250112) 02KY14 and star GA0940:02997993 with event index number of 2179952

Geocentric closest approach at 2021/11/28 09:05:29 UTC

J2000 position of star is 07:51:30.0 +04:45:40
Equinox of date position of star is 07:52:39.1 +04:42:15
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 52 degrees from the moon. Moon is 41% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 14.4 AU from the Sun and 13.8 AU from the Earth.
The TNO is moving 14.1 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
The 1-sigma error in the time of the event is 113 seconds.
The 1-sigma cross-track error in the shadow position is 1032 km.
The sky-plane scale is 9988.5 km/arcsec.

The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 5.1 sec chord
Diameter=29.6 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 250112, (2021/11/28 09:05UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:39.2 +27:58:17  1.1 23.31  53
Alhena         06:38:58.6 +16:22:43  1.9 21.52  68
PPM 153737     08:02:23.2 +04:49:04  5.6  2.43  49
PPM 153467     07:53:08.6 +05:17:32  7.5  0.60  51
PPM 153481     07:53:29.8 +04:36:38  9.9  0.23  51
PPM 153465     07:53:07.0 +04:40:58 10.8  0.12  52
250112         07:52:39.5 +04:42:14 15.9        51
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 15.7 km RECON observability=1.0 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 09:06:19 -59.9 Dark Up 36.0 131.8 Up 08:56:22 - 09:16:16 5447
Clarence Fulton 09:05:53 -57.0 Dark Up 36.6 137.1 Up 08:55:56 - 09:15:50 5434
Peachland 09:05:58 -57.6 Dark Up 36.8 136.4 Up 08:56:01 - 09:15:55 5419
Kelowna 09:05:57 -57.4 Dark Up 36.9 136.8 Up 08:56:00 - 09:15:54 5417
Summerland 09:05:59 -57.7 Dark Up 37.0 136.4 Up 08:56:02 - 09:15:56 5409
Penticton 09:05:59 -57.7 Dark Up 37.1 136.5 Up 08:56:02 - 09:15:56 5402
Oliver 09:06:00 -58.0 Dark Up 37.3 136.3 Up 08:56:03 - 09:15:57 5383
Anarchist Mountain Observatory 09:06:01 -58.0 Dark Up 37.5 136.5 Up 08:56:04 - 09:15:58 5369
Tonasket 09:06:03 -58.3 Dark Up 37.7 136.2 Up 08:56:06 - 09:16:00 5353
Okanogan 09:06:05 -58.6 Dark Up 37.9 135.9 Up 08:56:08 - 09:16:02 5338
Brewster 09:06:07 -58.9 Dark Up 38.0 135.5 Up 08:56:10 - 09:16:04 5329
Manson/Chelan 09:06:10 -59.2 Dark Up 38.0 135.0 Up 08:56:13 - 09:16:07 5327
Wenatchee 09:06:13 -59.7 Dark Up 38.3 134.6 Up 08:56:16 - 09:16:10 5304
Ellensburg 09:06:16 -60.1 Dark Up 38.4 134.1 Up 08:56:19 - 09:16:13 5287
Yakima 09:06:18 -60.4 Dark Up 38.7 133.9 Up 08:56:21 - 09:16:15 5264
Toppenish/White Swan 09:06:18 -60.5 Dark Up 39.0 133.9 Up 08:56:21 - 09:16:15 5246
Goldendale 09:06:22 -61.1 Dark Up 39.1 133.1 Up 08:56:25 - 09:16:19 5226
The Dalles 09:06:25 -61.5 Dark Up 39.1 132.6 Up 08:56:28 - 09:16:22 5222
Pasco 09:06:13 -60.1 Dark Up 39.7 135.2 Up 08:56:16 - 09:16:10 5204
Maupin 09:06:26 -61.7 Dark Up 39.4 132.5 Up 08:56:29 - 09:16:23 5195
PNWRO 09:06:14 -60.1 Dark Up 39.9 135.4 Up 08:56:17 - 09:16:11 5183
Sisters 09:06:33 -62.6 Dark Up 39.8 131.4 Up 08:56:36 - 09:16:30 5156
Redmond 09:06:32 -62.5 Dark Up 40.0 131.8 Up 08:56:35 - 09:16:29 5143
Bend 09:06:34 -62.7 Dark Up 40.1 131.6 Up 08:56:37 - 09:16:31 5134
Oregon Observatory 09:06:35 -62.9 Dark Up 40.1 131.3 Up 08:56:38 - 09:16:32 5127
La Pine/Gilchrist 09:06:37 -63.1 Dark Up 40.2 131.1 Up 08:56:40 - 09:16:34 5116
North Lake 09:06:36 -63.1 Dark Up 40.9 131.5 Up 08:56:39 - 09:16:33 5072
Chiloquin 09:06:38 -64.1 Dark Up 40.8 130.0 Up 08:56:41 - 09:16:35 5057
Klamath Falls 09:06:38 -64.3 Dark Up 41.0 129.9 Up 08:56:41 - 09:16:35 5033
Paisley 09:06:37 -63.3 Dark Up 41.4 131.6 Up 08:56:40 - 09:16:34 5026
Lakeview 09:06:38 -63.6 Dark Up 41.9 131.4 Up 08:56:41 - 09:16:35 4988
Fall River/Burney 09:06:38 -65.0 Dark Up 42.0 129.5 Up 08:56:41 - 09:16:35 4947
Cedarville 09:06:38 -64.0 Dark Up 42.4 131.2 Up 08:56:41 - 09:16:35 4940
Susanville 09:06:38 -65.0 Dark Up 42.8 129.9 Up 08:56:41 - 09:16:35 4883
Greenville 09:06:38 -65.4 Dark Up 42.8 129.4 Up 08:56:41 - 09:16:35 4875
Gimple 09:06:38 -65.3 Dark Up 42.9 129.4 Up 08:56:41 - 09:16:35 4872
Quincy 09:06:38 -65.5 Dark Up 43.0 129.2 Up 08:56:41 - 09:16:35 4862
Portola 09:06:38 -65.3 Dark Up 43.3 129.6 Up 08:56:41 - 09:16:35 4838
Reno 09:06:38 -65.1 Dark Up 43.9 130.2 Up 08:56:41 - 09:16:35 4799
Carson City 09:06:38 -65.4 Dark Up 44.1 129.9 Up 08:56:41 - 09:16:35 4775
Gardnerville 09:06:38 -65.5 Dark Up 44.3 129.8 Up 08:56:41 - 09:16:35 4757
Yerington 09:06:38 -65.1 Dark Up 44.6 130.5 Up 08:56:41 - 09:16:35 4741
Hawthorne 09:06:38 -65.1 Dark Up 45.3 130.7 Up 08:56:41 - 09:16:35 4691
Lee Vining 09:06:38 -65.7 Dark Up 45.3 129.8 Up 08:56:41 - 09:16:35 4670
Tonopah 09:06:38 -64.5 Dark Up 46.4 132.0 Up 08:56:41 - 09:16:35 4612
Bishop 09:06:38 -65.6 Dark Up 46.2 130.1 Up 08:56:41 - 09:16:35 4604
CPSLO 09:07:15 -68.2 Dark Up 46.1 126.1 Up 08:57:18 - 09:17:12 4520
Beatty 09:06:38 -64.8 Dark Up 47.4 131.6 Up 08:56:41 - 09:16:35 4514
Indian Springs 09:06:38 -64.2 Dark Up 48.3 132.7 Up 08:56:41 - 09:16:35 4453
Henderson 09:06:38 -64.0 Dark Up 49.1 133.1 Up 08:56:41 - 09:16:35 4390
Wildwood 09:06:38 -67.5 Dark Up 48.1 127.1 Up 08:56:41 - 09:16:35 4387
Dunrhomin 09:05:36 -55.4 Dark Up 50.5 149.0 Up 08:55:39 - 09:15:33 4382
Laughlin/Bullhead City 09:06:38 -64.1 Dark Up 49.9 132.8 Up 08:56:41 - 09:16:35 4311
Patrick 09:06:38 -63.4 Dark Up 50.2 133.9 Up 08:56:41 - 09:16:35 4305
Kingman/Dolan Springs 09:06:38 -63.7 Dark Up 50.2 133.5 Up 08:56:41 - 09:16:35 4294
Mohave Valley 09:06:38 -64.2 Dark Up 50.1 132.6 Up 08:56:41 - 09:16:35 4290
Idyllwild 09:06:38 -66.3 Dark Up 49.5 129.0 Up 08:56:41 - 09:16:35 4287
Lake Havasu City 09:06:38 -64.1 Dark Up 50.5 132.5 Up 08:56:41 - 09:16:35 4251
Parker 09:06:38 -64.3 Dark Up 50.8 132.2 Up 08:56:41 - 09:16:35 4223
Blythe 09:06:38 -64.7 Dark Up 50.9 131.4 Up 08:56:41 - 09:16:35 4195
Calipatria 09:06:38 -65.6 Dark Up 50.7 129.8 Up 08:56:41 - 09:16:35 4195
Yuma 09:06:38 -65.1 Dark Up 51.5 130.5 Up 08:56:41 - 09:16:35 4127
George/Scottsdale 09:06:38 -62.5 Dark Up 52.5 135.0 Up 08:56:41 - 09:16:35 4104

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 250112, (2021/11/28 09:05UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 23.31  53
Alhena         06:37:42.8 +16:23:57  1.9 21.52  68
PPM 153737     08:01:13.7 +04:52:47  5.6  2.43  49
PPM 153467     07:51:58.8 +05:20:59  7.5  0.60  51
PPM 153481     07:52:20.3 +04:40:05  9.9  0.23  51
PPM 153465     07:51:57.5 +04:44:25 10.8  0.12  52
250112         07:51:30.0 +04:45:40 15.9        52
Positions are for J2000

Event circumstances last updated at 2021/10/10 01:00:43 UT

Marc W. Buie, Southwest Research Institute

RECON