RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1300:06383514 with event index number of 1329924

Geocentric closest approach at 2023/09/02 10:07:48 UTC

J2000 position of star is 19:48:58.7 +40:25:33
Equinox of date position of star is 19:49:42.6 +40:28:49
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 76 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 15.1 AU from the Sun and 14.6 AU from the Earth.
The TNO is moving 33.6 km/sec on the sky relative to the star, or, 11.4 arcsec/hr.
The 1-sigma error in the time of the event is 39 seconds.
The 1-sigma cross-track error in the shadow position is 1129 km.
The sky-plane scale is 10567.2 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.5 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2023/09/02 10:08UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:14.4 +45:21:57  1.3 10.75  68
37Gam Cyg      20:23:04.7 +40:20:01  2.2  6.34  70
PPM 083550     19:48:18.2 +38:28:03  5.6  2.04  76
PPM 058801     19:46:37.3 +40:36:51  7.3  0.62  77
PPM 058868     19:49:10.1 +40:28:40  9.8  0.12  76
342842         19:49:47.5 +40:29:11 15.0        76
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 26.0 km RECON observability=1.0 and success probability=7.8%
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 10:05:22 -25.5 Dark Up 38.0 290.3 Up 10:01:36 - 10:09:08 -2179
Kelowna 10:05:23 -25.9 Dark Up 37.9 290.5 Up 10:01:37 - 10:09:09 -2223
Peachland 10:05:23 -26.1 Dark Up 38.1 290.4 Up 10:01:37 - 10:09:09 -2239
Summerland 10:05:23 -26.2 Dark Up 38.0 290.6 Up 10:01:37 - 10:09:09 -2254
Penticton 10:05:23 -26.2 Dark Up 37.9 290.7 Up 10:01:37 - 10:09:09 -2259
Oliver 10:05:23 -26.5 Dark Up 37.8 291.0 Up 10:01:37 - 10:09:09 -2297
Anarchist Mountain Observatory 10:05:23 -26.5 Dark Up 37.6 291.2 Up 10:01:37 - 10:09:09 -2313
Tonasket 10:05:23 -26.8 Dark Up 37.5 291.4 Up 10:01:37 - 10:09:09 -2346
Okanogan 10:05:23 -27.1 Dark Up 37.5 291.5 Up 10:01:37 - 10:09:09 -2384
Victoria 10:05:29 -28.4 Dark Up 39.9 289.3 Up 10:01:43 - 10:09:15 -2415
Brewster 10:05:24 -27.4 Dark Up 37.5 291.6 Up 10:01:38 - 10:09:10 -2416
Manson/Chelan 10:05:24 -27.7 Dark Up 37.7 291.6 Up 10:01:38 - 10:09:10 -2444
Wenatchee 10:05:24 -28.2 Dark Up 37.6 291.8 Up 10:01:38 - 10:09:10 -2496
Ellensburg 10:05:25 -28.6 Dark Up 37.6 292.0 Up 10:01:39 - 10:09:11 -2543
Yakima 10:05:25 -29.0 Dark Up 37.4 292.3 Up 10:01:39 - 10:09:11 -2587
Pasco 10:05:23 -28.6 Dark Up 36.4 293.3 Up 10:01:37 - 10:09:09 -2601
Toppenish/White Swan 10:05:25 -29.1 Dark Up 37.2 292.5 Up 10:01:39 - 10:09:11 -2607
PNWRO 10:05:22 -28.7 Dark Up 36.1 293.6 Up 10:01:36 - 10:09:08 -2623
Goldendale 10:05:26 -29.7 Dark Up 37.3 292.7 Up 10:01:40 - 10:09:12 -2671
The Dalles 10:05:26 -30.0 Dark Up 37.4 292.7 Up 10:01:40 - 10:09:12 -2700
Maupin 10:05:26 -30.3 Dark Up 37.2 293.0 Up 10:01:40 - 10:09:12 -2743
Redmond 10:05:26 -31.1 Dark Up 36.9 293.6 Up 10:01:40 - 10:09:12 -2839
Sisters 10:05:27 -31.2 Dark Up 37.2 293.4 Up 10:01:41 - 10:09:13 -2842
Dunrhomin 10:05:05 -25.7 Dark Up 24.7 303.1 Low 10:01:19 - 10:08:51 -2862
Bend 10:05:27 -31.3 Dark Up 36.9 293.7 Up 10:01:41 - 10:09:13 -2863
Oregon Observatory 10:05:27 -31.5 Dark Up 36.9 293.7 Up 10:01:41 - 10:09:13 -2883
La Pine/Gilchrist 10:05:27 -31.7 Dark Up 36.9 293.8 Up 10:01:41 - 10:09:13 -2906
North Lake 10:05:26 -31.8 Dark Up 36.3 294.4 Up 10:01:40 - 10:09:12 -2943
Paisley 10:05:26 -32.1 Dark Up 35.9 295.0 Up 10:01:40 - 10:09:12 -2994
Chiloquin 10:05:28 -32.8 Dark Up 36.7 294.4 Up 10:01:42 - 10:09:14 -3026
Lakeview 10:05:26 -32.4 Dark Up 35.5 295.4 Up 10:01:40 - 10:09:12 -3044
Klamath Falls 10:05:28 -33.0 Dark Up 36.5 294.7 Up 10:01:42 - 10:09:14 -3061
Cedarville 10:05:26 -32.9 Dark Up 35.1 295.9 Up 10:01:40 - 10:09:12 -3109
Fall River/Burney 10:05:28 -33.8 Dark Up 35.7 295.7 Up 10:01:42 - 10:09:14 -3177
Susanville 10:05:27 -34.0 Dark Up 34.9 296.4 Up 10:01:41 - 10:09:13 -3230
Gimple 10:05:28 -34.3 Dark Up 35.0 296.5 Up 10:01:42 - 10:09:14 -3262
Greenville 10:05:28 -34.3 Dark Up 35.0 296.4 Up 10:01:42 - 10:09:14 -3263
Quincy 10:05:28 -34.5 Dark Up 34.9 296.5 Up 10:01:42 - 10:09:14 -3283
Portola 10:05:27 -34.3 Dark Up 34.5 296.8 Up 10:01:41 - 10:09:13 -3289
Reno 10:05:26 -34.2 Dark Up 34.0 297.2 Up 10:01:40 - 10:09:12 -3306
Carson City 10:05:26 -34.5 Dark Up 33.8 297.5 Up 10:01:40 - 10:09:12 -3342
Yerington 10:05:25 -34.3 Dark Up 33.3 297.8 Up 10:01:39 - 10:09:11 -3350
Gardnerville 10:05:27 -34.7 Dark Up 33.6 297.6 Up 10:01:41 - 10:09:13 -3365
Hawthorne 10:05:25 -34.4 Dark Up 32.7 298.3 Up 10:01:39 - 10:09:11 -3387
Tonopah 10:05:23 -34.1 Dark Up 31.5 299.1 Up 10:01:37 - 10:09:09 -3407
Lee Vining 10:05:26 -35.1 Dark Up 32.8 298.4 Up 10:01:40 - 10:09:12 -3453
Bishop 10:05:25 -35.2 Dark Up 32.0 299.0 Up 10:01:39 - 10:09:11 -3499
Beatty 10:05:23 -34.7 Dark Up 30.6 299.9 Up 10:01:37 - 10:09:09 -3512
Indian Springs 10:05:22 -34.3 Dark Up 29.7 300.4 Low 10:01:36 - 10:09:08 -3520
Henderson 10:05:20 -34.3 Dark Up 29.0 300.9 Low 10:01:34 - 10:09:06 -3556
Patrick 10:05:19 -34.1 Dark Up 27.9 301.6 Low 10:01:33 - 10:09:05 -3590
Kingman/Dolan Springs 10:05:20 -34.3 Dark Up 27.9 301.7 Low 10:01:34 - 10:09:06 -3616
Laughlin/Bullhead City 10:05:20 -34.7 Dark Up 28.2 301.5 Low 10:01:34 - 10:09:06 -3631
Mohave Valley 10:05:21 -34.8 Dark Up 28.1 301.6 Low 10:01:35 - 10:09:07 -3657
Lake Havasu City 10:05:20 -35.0 Dark Up 27.7 301.9 Low 10:01:34 - 10:09:06 -3689
George/Scottsdale 10:05:18 -34.0 Dark Up 25.5 303.0 Low 10:01:32 - 10:09:04 -3697
Parker 10:05:21 -35.2 Dark Up 27.5 302.0 Low 10:01:35 - 10:09:07 -3722
CPSLO 10:05:30 -37.9 Dark Up 32.5 299.4 Up 10:01:44 - 10:09:16 -3742
Blythe 10:05:21 -35.7 Dark Up 27.4 302.2 Low 10:01:35 - 10:09:07 -3779
Idyllwild 10:05:25 -36.9 Dark Up 29.0 301.4 Low 10:01:39 - 10:09:11 -3819
Wildwood 10:05:28 -37.7 Dark Up 30.5 300.7 Up 10:01:42 - 10:09:14 -3823
Calipatria 10:05:23 -36.6 Dark Up 27.8 302.1 Low 10:01:37 - 10:09:09 -3849
Yuma 10:05:22 -36.4 Dark Up 26.9 302.6 Low 10:01:36 - 10:09:08 -3868

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 342842, (2023/09/02 10:08UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 10.75  68
37Gam Cyg      20:22:13.7 +40:15:24  2.2  6.34  70
PPM 083550     19:47:27.8 +38:24:28  5.6  2.04  76
PPM 058801     19:45:48.7 +40:33:19  7.3  0.62  77
PPM 058868     19:48:21.2 +40:25:04  9.8  0.12  76
342842         19:48:58.7 +40:25:33 15.0        76
Positions are for J2000

Event circumstances last updated at 2021/04/13 23:24:56 UT

Marc W. Buie, Southwest Research Institute

RECON