RECON: TNO occultation with 523700

Event between (523700) 14GM54 and star GA1120:08445774 with event index number of 324259

Geocentric closest approach at 2019/03/12 12:21:58 UTC

J2000 position of star is 19:24:55.7 +22:04:01
Equinox of date position of star is 19:25:44.1 +22:06:18
Stellar brightness G=15.7, use SENSEUP=128
Star is 115 degrees from the moon. Moon is 30% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 26.6 AU from the Sun and 27.0 AU from the Earth.
The TNO is moving 26.4 km/sec on the sky relative to the star, or, 4.8 arcsec/hr.
The 1-sigma error in the time of the event is 47 seconds.
The 1-sigma cross-track error in the shadow position is 1233 km.
The sky-plane scale is 19607.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 8.7 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523700, (2019/03/12 12:22UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:35.3 +38:48:09  0.0 19.62 113
Tarazed        19:47:10.3 +10:39:40  2.7 12.54 115
PPM 108817     19:21:43.5 +22:14:09  6.5  0.94 116
PPM 108951     19:25:31.3 +22:14:23  8.3  0.14 115
523700         19:25:45.0 +22:06:21 15.7       115
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 5.9 km RECON observability=1.0 and success probability=18.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 12:21:47 -19.5 Dark Down 38.6 101.6 Up 12:17:24 - 12:26:10 507
Penticton 12:21:46 -19.5 Dark Down 38.8 101.5 Up 12:17:23 - 12:26:09 492
Kelowna 12:21:48 -19.3 Dark Down 38.8 102.0 Up 12:17:25 - 12:26:11 491
Okanagan Falls 12:21:45 -19.6 Dark Down 38.8 101.4 Up 12:17:22 - 12:26:08 489
Manson/Chelan 12:21:39 -20.4 Dark Down 38.7 99.7 Up 12:17:16 - 12:26:02 485
Oliver 12:21:44 -19.6 Dark Down 38.9 101.2 Up 12:17:21 - 12:26:07 485
Entiat 12:21:37 -20.5 Dark Down 38.7 99.5 Up 12:17:14 - 12:26:00 484
Ellensburg 12:21:35 -21.0 Dark Down 38.6 98.7 Up 12:17:12 - 12:25:58 484
Wenatchee 12:21:37 -20.7 Dark Down 38.7 99.2 Up 12:17:14 - 12:26:00 483
The Dalles 12:21:29 -21.9 Dark Down 38.3 97.0 Up 12:17:06 - 12:25:52 481
Yakima 12:21:33 -21.1 Dark Down 38.6 98.3 Up 12:17:10 - 12:25:56 475
Oroville 12:21:44 -19.6 Dark Down 39.0 101.1 Up 12:17:21 - 12:26:07 475
Anarchist Mountain Observatory 12:21:44 -19.6 Dark Down 39.0 101.3 Up 12:17:21 - 12:26:07 473
Brewster 12:21:40 -20.1 Dark Down 38.9 100.2 Up 12:17:17 - 12:26:03 473
Tonasket 12:21:42 -19.7 Dark Down 39.0 101.0 Up 12:17:19 - 12:26:05 470
Okanogan 12:21:41 -19.9 Dark Down 39.0 100.6 Up 12:17:18 - 12:26:04 470
Goldendale 12:21:30 -21.5 Dark Down 38.5 97.5 Up 12:17:07 - 12:25:53 469
Sisters 12:21:23 -22.5 Dark Down 38.2 95.7 Up 12:17:00 - 12:25:46 467
Maupin 12:21:27 -21.9 Dark Down 38.4 96.8 Up 12:17:04 - 12:25:50 466
Toppenish/White Swan 12:21:32 -21.1 Dark Down 38.8 98.3 Up 12:17:09 - 12:25:55 463
Madras/Culver 12:21:25 -22.1 Dark Down 38.4 96.3 Up 12:17:02 - 12:25:48 454
Oregon Observatory 12:21:22 -22.6 Dark Down 38.3 95.5 Up 12:16:59 - 12:25:45 451
Bend 12:21:22 -22.4 Dark Down 38.4 95.7 Up 12:16:59 - 12:25:45 449
La Pine/Gilchrist 12:21:20 -22.7 Dark Down 38.3 95.2 Up 12:16:57 - 12:25:43 448
Redmond 12:21:23 -22.3 Dark Down 38.4 96.0 Up 12:17:00 - 12:25:46 448
Chiloquin 12:21:16 -23.3 Dark Down 38.1 94.1 Up 12:16:53 - 12:25:39 435
Klamath Falls 12:21:14 -23.4 Dark Down 38.2 93.9 Up 12:16:51 - 12:25:37 422
North Lake 12:21:19 -22.4 Dark Down 38.7 95.3 Up 12:16:56 - 12:25:42 407
George/Umatilla 12:21:31 -20.5 Dark Down 39.5 98.8 Up 12:17:08 - 12:25:54 403
Pasco 12:21:33 -20.3 Dark Down 39.6 99.2 Up 12:17:10 - 12:25:56 401
Tulelake 12:21:13 -23.2 Dark Down 38.4 93.9 Up 12:16:50 - 12:25:36 399
PNWRO 12:21:32 -20.2 Dark Down 39.8 99.2 Up 12:17:09 - 12:25:55 384
Paisley 12:21:17 -22.3 Dark Down 39.0 95.2 Up 12:16:54 - 12:25:40 375
Fall River/Burney 12:21:10 -23.5 Dark Down 38.5 93.2 Up 12:16:47 - 12:25:33 368
Lakeview 12:21:15 -22.4 Dark Down 39.2 94.9 Up 12:16:52 - 12:25:38 351
Cedarville 12:21:13 -22.4 Dark Down 39.4 94.5 Up 12:16:50 - 12:25:36 322
Greenville 12:21:07 -23.4 Dark Down 38.9 92.8 Up 12:16:44 - 12:25:30 318
Gimple 12:21:07 -23.3 Dark Down 38.9 92.8 Up 12:16:44 - 12:25:30 314
Susanville 12:21:08 -23.1 Dark Down 39.1 93.2 Up 12:16:45 - 12:25:31 312
Quincy 12:21:06 -23.5 Dark Down 38.9 92.6 Up 12:16:43 - 12:25:29 311
Portola 12:21:05 -23.1 Dark Down 39.3 92.8 Up 12:16:42 - 12:25:28 283
Reno 12:21:05 -22.7 Dark Down 39.8 93.1 Up 12:16:42 - 12:25:28 241
Carson City 12:21:04 -22.8 Dark Down 39.8 92.8 Up 12:16:41 - 12:25:27 228
Gardnerville 12:21:03 -22.8 Dark Down 39.8 92.6 Up 12:16:40 - 12:25:26 217
Yerington 12:21:03 -22.4 Dark Down 40.3 93.0 Up 12:16:40 - 12:25:26 188
Lee Vining 12:20:59 -22.6 Dark Down 40.4 92.2 Up 12:16:36 - 12:25:22 149
Hawthorne 12:21:02 -22.1 Dark Down 40.7 93.0 Up 12:16:39 - 12:25:25 144
CPSLO 12:20:47 -24.5 Dark Down 39.1 89.0 Up 12:16:24 - 12:25:10 132
Bishop 12:20:57 -22.2 Dark Down 41.0 92.1 Up 12:16:34 - 12:25:20 89
Tonopah 12:21:01 -21.1 Dark Down 41.9 93.5 Up 12:16:38 - 12:25:24 51
Lone Pine 12:20:54 -22.1 Dark Down 41.2 91.6 Up 12:16:31 - 12:25:17 42
Beatty 12:20:57 -21.0 Dark Down 42.3 92.7 Up 12:16:34 - 12:25:20 -19
Wildwood 12:20:44 -23.2 Dark Down 40.8 89.1 Up 12:16:21 - 12:25:07 -30
Indian Springs 12:20:57 -20.3 Dark Down 43.2 93.1 Up 12:16:34 - 12:25:20 -92
Idyllwild 12:20:44 -21.7 Dark Down 42.3 89.8 Up 12:16:21 - 12:25:07 -152
Henderson 12:20:55 -19.8 Dark Down 43.7 93.1 Up 12:16:32 - 12:25:18 -153
Searchlight/Boulder City 12:20:53 -19.9 Dark Down 43.8 92.5 Up 12:16:30 - 12:25:16 -181
Laughlin/Bullhead City 12:20:52 -19.7 Dark Down 44.1 92.5 Up 12:16:29 - 12:25:15 -213
Mohave Valley 12:20:51 -19.7 Dark Down 44.1 92.2 Up 12:16:28 - 12:25:14 -225
Kingman/Dolan Springs 12:20:53 -19.2 Dark Down 44.5 92.8 Up 12:16:30 - 12:25:16 -242
Patrick 12:20:54 -19.0 Dark Down 44.7 93.1 Up 12:16:31 - 12:25:17 -244
Calipatria 12:20:43 -20.8 Dark Down 43.3 89.9 Up 12:16:20 - 12:25:06 -248
Lake Havasu City 12:20:50 -19.6 Dark Down 44.3 91.9 Up 12:16:27 - 12:25:13 -257
Parker 12:20:48 -19.6 Dark Down 44.4 91.6 Up 12:16:25 - 12:25:11 -275
Blythe 12:20:46 -20.0 Dark Down 44.1 90.9 Up 12:16:23 - 12:25:09 -281
DCO 12:20:54 -18.5 Dark Down 45.3 93.3 Up 12:16:31 - 12:25:17 -298
Yuma 12:20:43 -20.2 Dark Down 44.1 90.0 Up 12:16:20 - 12:25:06 -320
Niwot 12:21:22 -11.5 NT Down 50.8 104.9 Up 12:16:59 - 12:25:45 -542

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 523700, (2019/03/12 12:22UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 19.62 113
Tarazed        19:46:15.6 +10:36:48  2.7 12.54 115
PPM 108817     19:20:54.3 +22:11:55  6.5  0.94 116
PPM 108951     19:24:42.0 +22:12:04  8.3  0.14 115
523700         19:24:55.7 +22:04:01 15.7       115
Positions are for J2000

Event circumstances last updated at 2018/10/24 21:13:08 UT

Marc W. Buie, Southwest Research Institute

RECON