RECON: TNO occultation with 523746

Event between (523746) 14UT114 and star UC4-635-019813 with event index number of 305101

Geocentric closest approach at 2019/09/16 09:58:43 UTC

J2000 position of star is 04:54:48.2 +36:49:45
Equinox of date position of star is 04:56:04.2 +36:51:30
Stellar brightness R=15.7, 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 101 seconds.
The 1-sigma cross-track error in the shadow position is 1228 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 09:59UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.2 +16:32:51  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 15.7        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 3.8 km RECON observability=1.0 and success probability=15.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Chiloquin 09:57:29 -37.8 Dark Up 50.8 80.7 Up 09:48:35 - 10:06:22 2405
Klamath Falls 09:57:23 -38.1 Dark Up 50.8 80.3 Up 09:48:29 - 10:06:16 2400
Sisters 09:57:51 -36.3 Dark Up 51.4 83.1 Up 09:48:58 - 10:06:45 2386
La Pine/Gilchrist 09:57:43 -36.8 Dark Up 51.3 82.3 Up 09:48:49 - 10:06:36 2382
Tulelake 09:57:19 -38.2 Dark Up 51.0 80.2 Up 09:48:26 - 10:06:13 2380
Oregon Observatory 09:57:46 -36.6 Dark Up 51.4 82.6 Up 09:48:53 - 10:06:40 2378
Fall River/Burney 09:57:09 -38.8 Dark Up 50.9 79.1 Up 09:48:15 - 10:06:02 2373
Bend 09:57:49 -36.4 Dark Up 51.5 82.9 Up 09:48:55 - 10:06:42 2370
Redmond 09:57:52 -36.1 Dark Up 51.6 83.3 Up 09:48:59 - 10:06:46 2361
The Dalles 09:58:09 -35.0 Dark Up 51.8 85.0 Up 09:49:16 - 10:07:03 2360
Madras/Culver 09:57:55 -35.8 Dark Up 51.7 83.8 Up 09:49:02 - 10:06:49 2357
Maupin 09:58:04 -35.3 Dark Up 51.8 84.5 Up 09:49:10 - 10:06:57 2354
North Lake 09:57:37 -36.8 Dark Up 51.7 82.1 Up 09:48:43 - 10:06:30 2344
Greenville 09:56:56 -39.4 Dark Up 51.0 78.2 Up 09:48:03 - 10:05:50 2341
Quincy 09:56:51 -39.5 Dark Up 50.9 77.9 Up 09:47:58 - 10:05:45 2340
Goldendale 09:58:12 -34.7 Dark Up 52.1 85.5 Up 09:49:18 - 10:07:05 2337
Gimple 09:56:54 -39.3 Dark Up 51.0 78.2 Up 09:48:00 - 10:05:47 2335
Susanville 09:57:00 -39.0 Dark Up 51.3 78.7 Up 09:48:07 - 10:05:54 2322
Paisley 09:57:29 -37.1 Dark Up 51.8 81.6 Up 09:48:36 - 10:06:23 2321
Yakima 09:58:22 -34.0 Dark Up 52.4 86.7 Up 09:49:29 - 10:07:16 2319
Ellensburg 09:58:28 -33.6 Dark Up 52.4 87.3 Up 09:49:34 - 10:07:21 2317
Toppenish/White Swan 09:58:19 -34.1 Dark Up 52.5 86.5 Up 09:49:26 - 10:07:13 2309
Lakeview 09:57:22 -37.4 Dark Up 51.9 81.0 Up 09:48:28 - 10:06:15 2307
Portola 09:56:50 -39.4 Dark Up 51.2 78.0 Up 09:47:56 - 10:05:43 2307
Wenatchee 09:58:34 -33.2 Dark Up 52.6 88.0 Up 09:49:40 - 10:07:27 2302
Tonasket 09:59:53 -31.7 Dark Up 53.4 90.6 Up 09:50:59 - 10:08:46 2298
Entiat 09:58:37 -33.0 Dark Up 52.7 88.4 Up 09:49:44 - 10:07:31 2295
Cedarville 09:57:14 -37.9 Dark Up 51.9 80.3 Up 09:48:20 - 10:06:07 2294
Oliver 09:59:53 -31.4 Dark Up 53.3 91.1 Up 09:50:59 - 10:08:46 2293
Oroville 09:59:53 -31.5 Dark Up 53.4 90.9 Up 09:50:59 - 10:08:46 2293
Manson/Chelan 09:58:41 -32.7 Dark Up 52.7 88.7 Up 09:49:47 - 10:07:34 2290
Okanagan Falls 09:59:53 -31.2 Dark Up 53.3 91.3 Up 09:50:59 - 10:08:46 2290
CPSLO 09:55:48 -43.0 Dark Up 49.8 72.5 Up 09:46:55 - 10:04:42 2289
Summerland 09:59:53 -30.9 Dark Up 53.2 91.9 Up 09:50:59 - 10:08:46 2287
Anarchist Mountain Observatory 09:59:53 -31.4 Dark Up 53.5 91.0 Up 09:50:59 - 10:08:46 2286
Penticton 09:59:53 -31.1 Dark Up 53.3 91.6 Up 09:50:59 - 10:08:46 2284
Brewster 09:58:42 -32.4 Dark Up 53.0 89.3 Up 09:49:49 - 10:07:36 2268
Kelowna 09:59:53 -30.7 Dark Up 53.4 92.2 Up 09:50:59 - 10:08:46 2266
Reno 09:56:46 -39.3 Dark Up 51.7 77.9 Up 09:47:53 - 10:05:40 2262
Carson City 09:56:41 -39.5 Dark Up 51.6 77.5 Up 09:47:47 - 10:05:34 2258
Okanogan 09:58:46 -32.1 Dark Up 53.1 89.8 Up 09:49:53 - 10:07:40 2255
Gardnerville 09:56:38 -39.7 Dark Up 51.6 77.2 Up 09:47:45 - 10:05:32 2254
George/Umatilla 09:58:13 -34.0 Dark Up 53.1 86.6 Up 09:49:19 - 10:07:06 2246
Pasco 09:58:18 -33.6 Dark Up 53.3 87.2 Up 09:49:24 - 10:07:11 2231
PNWRO 09:58:14 -33.7 Dark Up 53.5 87.0 Up 09:49:21 - 10:07:08 2218
Yerington 09:56:38 -39.4 Dark Up 52.0 77.5 Up 09:47:44 - 10:05:31 2213
Lee Vining 09:56:27 -40.1 Dark Up 51.8 76.2 Up 09:47:33 - 10:05:20 2203
Hawthorne 09:56:32 -39.4 Dark Up 52.3 77.1 Up 09:47:39 - 10:05:26 2173
Bishop 09:56:17 -40.2 Dark Up 52.2 75.7 Up 09:47:23 - 10:05:10 2147
Wildwood 09:55:33 -42.7 Dark Up 50.9 71.7 Up 09:46:39 - 10:04:26 2127
Lone Pine 09:56:06 -40.6 Dark Up 52.2 74.9 Up 09:47:12 - 10:04:59 2116
Tonopah 09:56:25 -39.0 Dark Up 53.3 77.1 Up 09:47:32 - 10:05:19 2069
Beatty 09:56:10 -39.6 Dark Up 53.3 75.7 Up 09:47:17 - 10:05:04 2025
Idyllwild 09:55:29 -41.9 Dark Up 52.3 71.7 Up 09:46:35 - 10:04:22 1981
Indian Springs 09:56:04 -39.2 Dark Up 54.0 75.6 Up 09:47:11 - 10:04:58 1942
Henderson 09:56:00 -39.2 Dark Up 54.4 75.1 Up 09:47:07 - 10:04:54 1884
Calipatria 09:55:19 -41.6 Dark Up 53.0 71.1 Up 09:46:25 - 10:04:12 1882
Searchlight/Boulder City 09:55:51 -39.6 Dark Up 54.3 74.3 Up 09:46:58 - 10:04:45 1871
Laughlin/Bullhead City 09:55:47 -39.5 Dark Up 54.5 74.0 Up 09:46:53 - 10:04:40 1841
Mohave Valley 09:55:44 -39.7 Dark Up 54.4 73.7 Up 09:46:51 - 10:04:38 1836
Blythe 09:55:27 -40.6 Dark Up 53.9 72.0 Up 09:46:34 - 10:04:21 1818
Lake Havasu City 09:55:38 -39.9 Dark Up 54.5 73.2 Up 09:46:44 - 10:04:31 1811
Yuma 09:55:14 -41.3 Dark Up 53.6 70.7 Up 09:46:21 - 10:04:08 1806
Parker 09:55:34 -40.1 Dark Up 54.4 72.7 Up 09:46:40 - 10:04:27 1804
Kingman/Dolan Springs 09:55:48 -39.2 Dark Up 54.9 74.2 Up 09:46:55 - 10:04:42 1802
Patrick 09:55:50 -38.9 Dark Up 55.1 74.6 Up 09:46:57 - 10:04:44 1791
DCO 09:55:48 -38.7 Dark Up 55.6 74.3 Up 09:46:54 - 10:04:41 1732
Niwot 09:57:02 -30.4 Dark Up 62.9 85.8 Up 09:48:09 - 10:05:56 1216

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 09:59UT)
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 15.7        62
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:30:39 UT

Marc W. Buie, Southwest Research Institute

RECON