RECON: TNO occultation with 15KB175

Event between 15KB175 and star GA0740:05902910 with event index number of 1953142

Geocentric closest approach at 2022/05/21 06:44:56 UTC

J2000 position of star is 16:15:54.5 -14:30:42
Equinox of date position of star is 16:17:08.2 -14:33:53
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 67 degrees from the moon. Moon is 67% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 37.6 AU from the Sun and 36.6 AU from the Earth.
The TNO is moving 24.2 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 122 seconds.
The 1-sigma cross-track error in the shadow position is 1596 km.
The sky-plane scale is 26564.0 km/arcsec.

The TNO has an absolute magnitude Hv=6.9
Diameter=238.8 km assuming a 5% albedo -- 10.4 sec chord
Diameter=97.5 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 15KB175, (2022/05/21 06:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.0 -26:28:47  0.9 12.33  61
8Bet1Sco       16:06:44.5 -19:51:54  2.6  5.85  68
PPM 231511     16:20:16.4 -14:55:32  5.8  0.83  66
PPM 231424     16:16:15.0 -14:41:39  8.4  0.26  67
PPM 231458     16:18:09.8 -14:31:11  9.7  0.24  67
15KB175        16:17:10.3 -14:33:58 15.6        67
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 18.0 km RECON observability=1.0 and success probability=0.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 06:46:38 -18.0 Dark Down 22.2 156.2 Low 06:35:57 - 06:57:19 6701
Kelowna 06:46:39 -18.4 Dark Down 22.5 155.9 Low 06:35:58 - 06:57:20 6678
Peachland 06:46:40 -18.4 Dark Down 22.6 155.6 Low 06:35:59 - 06:57:21 6666
Summerland 06:46:39 -18.6 Dark Down 22.7 155.7 Low 06:35:58 - 06:57:20 6660
Penticton 06:46:40 -18.6 Dark Down 22.8 155.8 Low 06:35:59 - 06:57:21 6658
Oliver 06:46:40 -19.0 Dark Down 23.1 155.7 Low 06:35:59 - 06:57:21 6639
Anarchist Mountain Observatory 06:46:39 -19.2 Dark Down 23.4 155.9 Low 06:35:58 - 06:57:20 6633
Tonasket 06:46:40 -19.5 Dark Down 23.6 155.8 Low 06:35:59 - 06:57:21 6614
Okanogan 06:46:40 -19.8 Dark Down 23.9 155.6 Low 06:35:59 - 06:57:21 6592
Brewster 06:46:42 -20.0 Dark Down 24.1 155.3 Low 06:36:01 - 06:57:23 6573
Manson/Chelan 06:46:43 -20.1 Dark Down 24.2 154.9 Low 06:36:02 - 06:57:24 6554
Victoria 06:46:51 -18.8 Dark Down 22.6 151.8 Low 06:36:10 - 06:57:32 6530
Wenatchee 06:46:44 -20.5 Dark Down 24.5 154.7 Low 06:36:03 - 06:57:25 6523
Ellensburg 06:46:45 -20.9 Dark Down 24.8 154.3 Low 06:36:04 - 06:57:26 6495
Pasco 06:46:41 -21.9 Dark Down 25.9 155.6 Low 06:36:00 - 06:57:22 6477
Yakima 06:46:45 -21.3 Dark Down 25.2 154.2 Low 06:36:04 - 06:57:26 6470
PNWRO 06:46:41 -22.2 Dark Down 26.2 155.8 Low 06:36:00 - 06:57:22 6467
Toppenish/White Swan 06:46:45 -21.5 Dark Down 25.5 154.4 Low 06:36:04 - 06:57:26 6460
Goldendale 06:46:46 -21.9 Dark Down 25.8 153.8 Low 06:36:05 - 06:57:27 6419
The Dalles 06:46:48 -22.1 Dark Down 25.9 153.4 Low 06:36:07 - 06:57:29 6398
Maupin 06:46:48 -22.5 Dark Down 26.3 153.4 Low 06:36:07 - 06:57:29 6374
Dunrhomin 06:46:01 -29.5 Dark Down 34.6 169.7 Up 06:35:20 - 06:56:42 6353
Redmond 06:46:49 -23.3 Dark Down 27.1 153.1 Low 06:36:08 - 06:57:30 6316
Sisters 06:46:50 -23.2 Dark Down 27.0 152.7 Low 06:36:09 - 06:57:31 6309
Bend 06:46:49 -23.5 Dark Down 27.2 152.9 Low 06:36:08 - 06:57:30 6299
Oregon Observatory 06:46:50 -23.6 Dark Down 27.4 152.8 Low 06:36:09 - 06:57:31 6286
La Pine/Gilchrist 06:46:50 -23.8 Dark Down 27.5 152.7 Low 06:36:09 - 06:57:31 6271
North Lake 06:46:49 -24.4 Dark Down 28.1 153.2 Low 06:36:08 - 06:57:30 6255
Paisley 06:46:48 -25.0 Dark Down 28.7 153.4 Low 06:36:07 - 06:57:29 6226
Lakeview 06:46:48 -25.5 Dark Down 29.2 153.5 Low 06:36:07 - 06:57:29 6197
Chiloquin 06:46:52 -24.8 Dark Down 28.4 152.0 Low 06:36:11 - 06:57:33 6191
Klamath Falls 06:46:53 -25.1 Dark Down 28.7 152.0 Low 06:36:12 - 06:57:34 6170
Cedarville 06:46:48 -26.2 Dark Down 29.9 153.5 Low 06:36:07 - 06:57:29 6156
Fall River/Burney 06:46:52 -26.3 Dark Down 29.9 152.1 Low 06:36:11 - 06:57:33 6098
Susanville 06:46:51 -27.1 Dark Down 30.7 152.7 Up 06:36:10 - 06:57:32 6070
Gimple 06:46:51 -27.3 Dark Down 30.9 152.4 Up 06:36:10 - 06:57:32 6046
Greenville 06:46:51 -27.3 Dark Down 30.9 152.3 Up 06:36:10 - 06:57:32 6044
Portola 06:46:50 -27.7 Dark Down 31.3 152.7 Up 06:36:09 - 06:57:31 6032
Quincy 06:46:52 -27.5 Dark Down 31.0 152.3 Up 06:36:11 - 06:57:33 6030
Reno 06:46:48 -28.1 Dark Down 31.8 153.4 Up 06:36:07 - 06:57:29 6027
Carson City 06:46:49 -28.5 Dark Down 32.1 153.3 Up 06:36:08 - 06:57:30 6002
Yerington 06:46:46 -28.8 Dark Down 32.5 153.9 Up 06:36:05 - 06:57:27 6002
Gardnerville 06:46:49 -28.7 Dark Down 32.3 153.3 Up 06:36:08 - 06:57:30 5986
Hawthorne 06:46:46 -29.4 Dark Down 33.1 154.3 Up 06:36:05 - 06:57:27 5980
Tonopah 06:46:41 -30.1 Dark Down 34.0 155.7 Up 06:36:00 - 06:57:22 5976
Lee Vining 06:46:48 -29.8 Dark Down 33.4 153.6 Up 06:36:07 - 06:57:29 5929
Beatty 06:46:40 -31.3 Dark Down 35.2 155.9 Up 06:35:59 - 06:57:21 5902
Bishop 06:46:45 -30.5 Dark Down 34.2 154.2 Up 06:36:04 - 06:57:26 5901
Indian Springs 06:46:37 -31.9 Dark Down 35.8 157.0 Up 06:35:56 - 06:57:18 5900
Henderson 06:46:34 -32.5 Dark Down 36.5 157.6 Up 06:35:53 - 06:57:15 5875
Patrick 06:46:31 -33.4 Dark Down 37.4 158.7 Up 06:35:50 - 06:57:12 5852
Kingman/Dolan Springs 06:46:32 -33.5 Dark Down 37.6 158.4 Up 06:35:51 - 06:57:13 5832
Laughlin/Bullhead City 06:46:33 -33.5 Dark Down 37.5 157.8 Up 06:35:52 - 06:57:14 5819
Mohave Valley 06:46:34 -33.7 Dark Down 37.7 157.8 Up 06:35:53 - 06:57:15 5798
Lake Havasu City 06:46:33 -34.2 Dark Down 38.2 157.9 Up 06:35:52 - 06:57:14 5773
George/Scottsdale 06:46:25 -35.4 Dark Down 39.6 160.6 Up 06:35:44 - 06:57:06 5766
Parker 06:46:33 -34.5 Dark Down 38.5 157.9 Up 06:35:52 - 06:57:14 5747
Blythe 06:46:34 -35.0 Dark Down 38.9 157.4 Up 06:35:53 - 06:57:15 5701
CPSLO 06:46:54 -31.9 Dark Down 35.2 151.2 Up 06:36:13 - 06:57:35 5697
Idyllwild 06:46:41 -34.4 Dark Down 38.1 155.0 Up 06:36:00 - 06:57:22 5665
Wildwood 06:46:48 -33.6 Dark Down 37.1 153.0 Up 06:36:07 - 06:57:29 5651
Calipatria 06:46:37 -35.3 Dark Down 39.0 156.1 Up 06:35:56 - 06:57:18 5643
Yuma 06:46:34 -35.9 Dark Down 39.7 157.0 Up 06:35:53 - 06:57:15 5628

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 15KB175, (2022/05/21 06:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 12.33  61
8Bet1Sco       16:05:26.2 -19:48:20  2.6  5.85  68
PPM 231511     16:19:00.4 -14:52:22  5.8  0.83  66
PPM 231424     16:14:59.1 -14:38:21  8.4  0.26  67
PPM 231458     16:16:54.0 -14:27:57  9.7  0.24  67
15KB175        16:15:54.5 -14:30:42 15.6        67
Positions are for J2000

Event circumstances last updated at 2021/10/07 00:35:09 UT

Marc W. Buie, Southwest Research Institute

RECON