RECON: TNO occultation with 523746

Event between (523746) 14UT114 and star GA1260:01517061 with event index number of 305101

Geocentric closest approach at 2019/09/16 09:56:23 UTC

J2000 position of star is 04:54:48.2 +36:49:45
Equinox of date position of star is 04:56:07.2 +36:51:34
Stellar brightness G=15.1, use SENSEUP=128
Star is 62 degrees from the moon. Moon is 95% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 15.9 AU from the Sun and 15.8 AU from the Earth.
The TNO is moving 8.0 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 152 seconds.
The 1-sigma cross-track error in the shadow position is 1848 km.
The sky-plane scale is 11447.1 km/arcsec.

The TNO has an absolute magnitude Hv=9.0
Diameter=95.5 km assuming a 5% albedo -- 11.9 sec chord
Diameter=39.0 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523746, (2019/09/16 09:56UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.2 +16:32:50  0.8 20.75  52
3Iot Aur       04:58:16.8 +33:11:44  2.7  3.69  61
PPM 069764     04:57:39.2 +36:11:54  6.0  0.73  62
PPM 069721     04:54:26.3 +36:23:23  9.3  0.58  61
523746         04:56:07.8 +36:51:35 15.1        62
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 4.5 km RECON observability=1.0 and success probability=10.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Chiloquin 09:55:12 -38.1 Dark Up 50.4 80.4 Up 09:42:00 - 10:08:24 3429
Klamath Falls 09:55:08 -38.3 Dark Up 50.4 80.1 Up 09:41:56 - 10:08:20 3424
Sisters 09:55:38 -36.5 Dark Up 51.0 82.7 Up 09:42:26 - 10:08:50 3409
La Pine/Gilchrist 09:55:28 -37.0 Dark Up 50.9 82.0 Up 09:42:16 - 10:08:40 3406
Tulelake 09:55:04 -38.4 Dark Up 50.6 79.9 Up 09:41:52 - 10:08:16 3405
Oregon Observatory 09:55:30 -36.8 Dark Up 51.0 82.3 Up 09:42:18 - 10:08:42 3402
Fall River/Burney 09:54:53 -39.1 Dark Up 50.4 78.8 Up 09:41:41 - 10:08:05 3398
Bend 09:55:33 -36.6 Dark Up 51.1 82.6 Up 09:42:21 - 10:08:45 3394
Redmond 09:55:35 -36.4 Dark Up 51.2 82.9 Up 09:42:23 - 10:08:47 3384
The Dalles 09:55:54 -35.3 Dark Up 51.4 84.6 Up 09:42:42 - 10:09:06 3382
Madras/Culver 09:55:40 -36.1 Dark Up 51.3 83.4 Up 09:42:28 - 10:08:52 3381
Maupin 09:55:48 -35.6 Dark Up 51.4 84.2 Up 09:42:36 - 10:09:00 3377
North Lake 09:55:22 -37.1 Dark Up 51.3 81.8 Up 09:42:10 - 10:08:34 3368
Greenville 09:54:40 -39.6 Dark Up 50.5 77.9 Up 09:41:28 - 10:07:52 3367
Quincy 09:54:39 -39.8 Dark Up 50.5 77.7 Up 09:41:27 - 10:07:51 3366
Gimple 09:54:41 -39.6 Dark Up 50.6 78.0 Up 09:41:29 - 10:07:53 3361
Goldendale 09:55:56 -34.9 Dark Up 51.7 85.1 Up 09:42:44 - 10:09:08 3359
Susanville 09:54:44 -39.3 Dark Up 50.8 78.4 Up 09:41:32 - 10:07:56 3348
Paisley 09:55:13 -37.4 Dark Up 51.4 81.3 Up 09:42:01 - 10:08:25 3345
Yakima 09:56:06 -34.2 Dark Up 52.0 86.3 Up 09:42:54 - 10:09:18 3341
Ellensburg 09:56:12 -33.9 Dark Up 52.0 86.9 Up 09:43:00 - 10:09:24 3339
Portola 09:54:36 -39.7 Dark Up 50.8 77.7 Up 09:41:24 - 10:07:48 3333
Lakeview 09:55:06 -37.7 Dark Up 51.5 80.7 Up 09:41:54 - 10:08:18 3332
Toppenish/White Swan 09:56:04 -34.3 Dark Up 52.1 86.2 Up 09:42:52 - 10:09:16 3332
Wenatchee 09:56:18 -33.4 Dark Up 52.2 87.6 Up 09:43:06 - 10:09:30 3324
Cedarville 09:54:59 -38.1 Dark Up 51.5 80.0 Up 09:41:47 - 10:08:11 3319
CPSLO 09:53:35 -43.3 Dark Up 49.3 72.4 Up 09:40:23 - 10:06:47 3318
Manson/Chelan 09:56:24 -33.0 Dark Up 52.4 88.3 Up 09:43:12 - 10:09:36 3312
Brewster 09:56:27 -32.7 Dark Up 52.6 88.9 Up 09:43:15 - 10:09:39 3289
Reno 09:54:32 -39.6 Dark Up 51.2 77.7 Up 09:41:20 - 10:07:44 3288
Carson City 09:54:26 -39.8 Dark Up 51.2 77.3 Up 09:41:14 - 10:07:38 3285
Gardnerville 09:54:24 -40.0 Dark Up 51.1 77.0 Up 09:41:12 - 10:07:36 3280
Okanogan 09:56:30 -32.3 Dark Up 52.8 89.4 Up 09:43:18 - 10:09:42 3276
Summerland 09:56:47 -31.4 Dark Up 52.8 91.0 Up 09:43:35 - 10:09:59 3275
Okanagan Falls 09:56:44 -31.5 Dark Up 52.8 90.7 Up 09:43:32 - 10:09:56 3271
Oliver 09:56:41 -31.7 Dark Up 52.8 90.5 Up 09:43:29 - 10:09:53 3271
Penticton 09:56:46 -31.4 Dark Up 52.8 91.0 Up 09:43:34 - 10:09:58 3269
Tonasket 09:56:35 -32.0 Dark Up 52.9 90.0 Up 09:43:23 - 10:09:47 3266
Oroville 09:56:38 -31.8 Dark Up 52.9 90.3 Up 09:43:26 - 10:09:50 3265
Anarchist Mountain Observatory 09:56:40 -31.7 Dark Up 52.9 90.4 Up 09:43:28 - 10:09:52 3260
Kelowna 09:56:51 -31.0 Dark Up 52.9 91.6 Up 09:43:39 - 10:10:03 3257
Pasco 09:56:02 -33.9 Dark Up 52.9 86.8 Up 09:42:50 - 10:09:14 3255
PNWRO 09:55:58 -34.0 Dark Up 53.1 86.7 Up 09:42:46 - 10:09:10 3241
Yerington 09:54:25 -39.7 Dark Up 51.6 77.3 Up 09:41:13 - 10:07:37 3240
Lee Vining 09:54:10 -40.4 Dark Up 51.3 76.0 Up 09:40:58 - 10:07:22 3231
Hawthorne 09:54:18 -39.7 Dark Up 51.9 76.9 Up 09:41:06 - 10:07:30 3201
Bishop 09:54:01 -40.5 Dark Up 51.7 75.5 Up 09:40:49 - 10:07:13 3175
Wildwood 09:53:18 -43.1 Dark Up 50.5 71.5 Up 09:40:06 - 10:06:30 3157
Lone Pine 09:53:50 -40.9 Dark Up 51.8 74.7 Up 09:40:38 - 10:07:02 3144
Tonopah 09:54:11 -39.3 Dark Up 52.8 76.9 Up 09:40:59 - 10:07:23 3098
Beatty 09:53:54 -39.9 Dark Up 52.9 75.5 Up 09:40:42 - 10:07:06 3054
Idyllwild 09:53:13 -42.2 Dark Up 51.9 71.5 Up 09:40:01 - 10:06:25 3012
Indian Springs 09:53:51 -39.6 Dark Up 53.6 75.4 Up 09:40:39 - 10:07:03 2972
Henderson 09:53:45 -39.5 Dark Up 54.0 74.9 Up 09:40:33 - 10:06:57 2914
Calipatria 09:53:06 -41.9 Dark Up 52.6 71.0 Up 09:39:54 - 10:06:18 2913
Searchlight/Boulder City 09:53:35 -39.9 Dark Up 53.9 74.2 Up 09:40:23 - 10:06:47 2902
Laughlin/Bullhead City 09:53:33 -39.9 Dark Up 54.0 73.9 Up 09:40:21 - 10:06:45 2872
Mohave Valley 09:53:28 -40.1 Dark Up 53.9 73.5 Up 09:40:16 - 10:06:40 2867
Blythe 09:53:11 -41.0 Dark Up 53.5 71.8 Up 09:39:59 - 10:06:23 2850
Lake Havasu City 09:53:24 -40.2 Dark Up 54.0 73.0 Up 09:40:12 - 10:06:36 2842
Yuma 09:52:58 -41.6 Dark Up 53.1 70.6 Up 09:39:46 - 10:06:10 2838
Parker 09:53:18 -40.4 Dark Up 53.9 72.6 Up 09:40:06 - 10:06:30 2835
Kingman/Dolan Springs 09:53:33 -39.6 Dark Up 54.4 74.1 Up 09:40:21 - 10:06:45 2833
Patrick 09:53:35 -39.3 Dark Up 54.7 74.4 Up 09:40:23 - 10:06:47 2822
George/Scottsdale 09:53:15 -39.1 Dark Up 55.7 72.5 Up 09:40:03 - 10:06:27 2640
SwRI 09:54:44 -30.9 Dark Up 62.4 85.2 Up 09:41:32 - 10:07:56 2252

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 523746, (2019/09/16 09:56UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 20.75  52
3Iot Aur       04:56:59.6 +33:09:58  2.7  3.69  61
PPM 069764     04:56:20.0 +36:10:07  6.0  0.73  62
PPM 069721     04:53:07.1 +36:21:30  9.3  0.58  61
523746         04:54:48.2 +36:49:45 15.1        62
Positions are for J2000

Event circumstances last updated at 2019/07/31 18:00:58 UT

Marc W. Buie, Southwest Research Institute

RECON