RECON: TNO occultation with 523760

Event between (523760) 14WQ509 and star GA1200:02939906 with event index number of 348734

Geocentric closest approach at 2020/02/04 10:18:25 UTC

J2000 position of star is 07:15:55.0 +31:33:18
Equinox of date position of star is 07:17:11.1 +31:31:08
Stellar brightness G=16.6, use SENSEUP=128
Star is 36 degrees from the moon. Moon is 73% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 43.4 AU from the Sun and 42.5 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 217 seconds.
The 1-sigma cross-track error in the shadow position is 1738 km.
The sky-plane scale is 30846.4 km/arcsec.

The TNO has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 19.4 sec chord
Diameter=178.2 km assuming a 30% albedo -- 7.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 523760, (2020/02/04 10:18UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:32.6 +27:58:34  1.1  7.28  42
PPM 072652     07:19:21.0 +30:55:05  6.0  0.76  36
PPM 072641     07:18:48.0 +31:39:39  7.2  0.37  36
PPM 072601     07:16:56.2 +31:19:58 10.2  0.19  36
523760         07:17:12.3 +31:31:06 16.6        36
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 4.2 sigma about the mid-time.
The median site spacing is 17.0 km RECON observability=1.0 and success probability=0.0%
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 10:15:53 -47.8 Dark Up 42.6 270.3 Up 10:00:53 - 10:30:53 11721
Kelowna 10:15:52 -48.2 Dark Up 42.7 270.6 Up 10:00:52 - 10:30:52 11685
Summerland 10:15:51 -48.4 Dark Up 42.8 270.7 Up 10:00:51 - 10:30:51 11657
Penticton 10:15:49 -48.4 Dark Up 42.8 270.8 Up 10:00:49 - 10:30:49 11655
Oliver 10:15:49 -48.7 Dark Up 42.8 271.1 Up 10:00:49 - 10:30:49 11626
Anarchist Mountain Observatory 10:15:48 -48.7 Dark Up 42.6 271.4 Up 10:00:48 - 10:30:48 11619
Tonasket 10:15:47 -48.9 Dark Up 42.7 271.7 Up 10:00:47 - 10:30:47 11591
Okanogan 10:15:47 -49.2 Dark Up 42.8 271.9 Up 10:00:47 - 10:30:47 11558
Brewster 10:15:46 -49.5 Dark Up 42.9 272.0 Up 10:00:46 - 10:30:46 11529
Manson/Chelan 10:15:46 -49.8 Dark Up 43.1 271.9 Up 10:00:46 - 10:30:46 11499
Entiat 10:15:45 -50.0 Dark Up 43.2 272.0 Up 10:00:45 - 10:30:45 11478
Niwot 10:14:58 -44.3 Dark Down 31.4 286.7 Up 09:59:58 - 10:29:58 11455
Wenatchee 10:15:44 -50.2 Dark Up 43.2 272.2 Up 10:00:44 - 10:30:44 11453
SwRI 10:14:59 -44.4 Dark Down 31.4 286.7 Up 09:59:59 - 10:29:59 11442
Victoria 10:15:53 -50.9 Dark Up 45.3 268.9 Up 10:00:53 - 10:30:53 11441
Ellensburg 10:15:44 -50.6 Dark Up 43.4 272.4 Up 10:00:44 - 10:30:44 11411
Pasco 10:15:39 -50.3 Dark Up 42.4 274.1 Up 10:00:39 - 10:30:39 11399
PNWRO 10:15:38 -50.4 Dark Up 42.2 274.5 Up 10:00:38 - 10:30:38 11387
Yakima 10:15:42 -50.9 Dark Up 43.4 272.8 Up 10:00:42 - 10:30:42 11376
Toppenish/White Swan 10:15:42 -50.9 Dark Up 43.2 273.1 Up 10:00:42 - 10:30:42 11364
Goldendale 10:15:40 -51.5 Dark Up 43.5 273.4 Up 10:00:40 - 10:30:40 11301
The Dalles 10:15:40 -51.9 Dark Up 43.8 273.3 Up 10:00:40 - 10:30:40 11269
Maupin 10:15:39 -52.1 Dark Up 43.7 273.8 Up 10:00:39 - 10:30:39 11237
Redmond 10:15:37 -52.7 Dark Up 43.7 274.6 Up 10:00:37 - 10:30:37 11155
Sisters 10:15:37 -52.9 Dark Up 44.0 274.3 Up 10:00:37 - 10:30:37 11142
Bend 10:15:36 -52.9 Dark Up 43.7 274.7 Up 10:00:36 - 10:30:36 11131
Oregon Observatory 10:15:35 -53.1 Dark Up 43.8 274.8 Up 10:00:35 - 10:30:35 11111
La Pine/Gilchrist 10:15:35 -53.3 Dark Up 43.9 274.9 Up 10:00:35 - 10:30:35 11091
North Lake 10:15:33 -53.2 Dark Up 43.4 275.7 Up 10:00:33 - 10:30:33 11076
Paisley 10:15:31 -53.3 Dark Up 43.1 276.4 Up 10:00:31 - 10:30:31 11041
Lakeview 10:15:28 -53.5 Dark Up 42.9 277.0 Up 10:00:28 - 10:30:28 11004
Cedarville 10:15:26 -53.8 Dark Up 42.7 277.7 Up 10:00:26 - 10:30:26 10952
Klamath Falls 10:15:32 -54.3 Dark Up 43.9 276.1 Up 10:00:32 - 10:30:32 10952
Fall River/Burney 10:15:27 -54.8 Dark Up 43.5 277.5 Up 10:00:27 - 10:30:27 10862
Susanville 10:15:24 -54.8 Dark Up 42.9 278.5 Up 10:00:24 - 10:30:24 10834
Gimple 10:15:23 -55.0 Dark Up 43.0 278.6 Up 10:00:23 - 10:30:23 10801
Greenville 10:15:23 -55.1 Dark Up 43.1 278.6 Up 10:00:23 - 10:30:23 10798
Reno 10:15:19 -54.7 Dark Up 42.1 279.7 Up 10:00:19 - 10:30:19 10790
Portola 10:15:22 -55.0 Dark Up 42.7 279.1 Up 10:00:22 - 10:30:22 10788
Quincy 10:15:23 -55.2 Dark Up 43.0 278.7 Up 10:00:23 - 10:30:23 10780
Yerington 10:15:16 -54.6 Dark Up 41.5 280.5 Up 10:00:16 - 10:30:16 10766
Tonopah 10:15:10 -53.7 Dark Up 39.9 282.2 Up 10:00:10 - 10:30:10 10763
Carson City 10:15:18 -54.9 Dark Up 42.1 280.0 Up 10:00:18 - 10:30:18 10758
Hawthorne 10:15:15 -54.5 Dark Up 41.0 281.2 Up 10:00:15 - 10:30:15 10746
Gardnerville 10:15:18 -55.0 Dark Up 42.0 280.3 Up 10:00:18 - 10:30:18 10738
Indian Springs 10:15:04 -53.3 Dark Up 38.4 284.1 Up 10:00:04 - 10:30:04 10696
Beatty 10:15:06 -53.9 Dark Up 39.3 283.4 Up 10:00:06 - 10:30:06 10679
Henderson 10:15:00 -53.0 Dark Up 37.7 284.8 Up 10:00:00 - 10:30:00 10678
DCO 10:14:55 -52.0 Dark Up 36.0 286.2 Up 09:59:55 - 10:29:55 10676
Lee Vining 10:15:14 -55.1 Dark Up 41.3 281.4 Up 10:00:14 - 10:30:14 10676
Patrick 10:14:57 -52.4 Dark Up 36.7 285.7 Up 09:59:57 - 10:29:57 10671
Bishop 10:15:10 -54.9 Dark Up 40.6 282.3 Up 10:00:10 - 10:30:10 10651
Kingman/Dolan Springs 10:14:57 -52.6 Dark Up 36.8 285.8 Up 09:59:57 - 10:29:57 10643
Searchlight/Boulder City 10:15:00 -53.2 Dark Up 37.5 285.3 Up 10:00:00 - 10:30:00 10630
Laughlin/Bullhead City 10:14:57 -53.0 Dark Up 37.2 285.6 Up 09:59:57 - 10:29:57 10618
George/Scottsdale 10:14:49 -51.4 Dark Down 34.6 287.7 Up 09:59:49 - 10:29:49 10611
Mohave Valley 10:14:57 -53.1 Dark Up 37.1 285.8 Up 09:59:57 - 10:29:57 10594
Lake Havasu City 10:14:57 -53.1 Dark Up 36.8 286.2 Up 09:59:57 - 10:29:57 10569
Parker 10:14:54 -53.2 Dark Up 36.7 286.5 Up 09:59:54 - 10:29:54 10538
Blythe 10:14:53 -53.6 Dark Up 36.8 286.7 Up 09:59:53 - 10:29:53 10477
Idyllwild 10:14:57 -55.2 Dark Up 38.5 285.8 Up 09:59:57 - 10:29:57 10393
Yuma 10:14:50 -53.9 Dark Up 36.5 287.4 Up 09:59:50 - 10:29:50 10391
Calipatria 10:14:53 -54.5 Dark Up 37.4 286.7 Up 09:59:53 - 10:29:53 10390
CPSLO 10:15:10 -57.4 Dark Up 42.0 283.0 Up 10:00:10 - 10:30:10 10367
Wildwood 10:15:02 -56.5 Dark Up 40.1 284.9 Up 10:00:02 - 10:30:02 10343

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 523760, (2020/02/04 10:18UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1  7.28  42
PPM 072652     07:18:04.1 +30:57:21  6.0  0.76  36
PPM 072641     07:17:30.6 +31:41:54  7.2  0.37  36
PPM 072601     07:15:39.0 +31:22:09 10.2  0.19  36
523760         07:15:55.0 +31:33:18 16.6        36
Positions are for J2000

Event circumstances last updated at 2019/10/15 22:07:22 UT

Marc W. Buie, Southwest Research Institute

RECON