RECON: TNO occultation with 523700

Event between (523700) 14GM54 and star UC4-561-095368 with event index number of 324510

Geocentric closest approach at 2020/05/10 07:12:27 UTC

J2000 position of star is 19:38:06.5 +22:02:06
Equinox of date position of star is 19:38:55.1 +22:04:43
Stellar brightness R=15.7, use SENSEUP=128
Star is 52 degrees from the moon. Moon is 89% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 27.0 AU from the Sun and 26.8 AU from the Earth.
The TNO is moving 15.5 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 76 seconds.
The 1-sigma cross-track error in the shadow position is 1264 km.
The sky-plane scale is 19401.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 14.7 sec chord
Diameter=93.5 km assuming a 30% albedo -- 6.0 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523700, (2020/05/10 07:12UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:37.7 +38:48:13  0.0 21.25  63
Tarazed        19:47:13.6 +10:39:51  2.7 11.59  44
PPM 109310     19:37:00.6 +22:37:55  6.1  0.71  52
PPM 109351     19:37:59.2 +22:03:09  7.2  0.23  52
PPM 109395     19:39:07.7 +21:55:54  9.0  0.15  52
523700         19:38:59.1 +22:04:56 15.7        52
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 24.2 km RECON observability=1.0 and success probability=29.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:18:21 -21.9 Dark Up 25.7 85.7 Low 07:11:33 - 07:25:09 2082
Summerland 07:18:21 -21.9 Dark Up 25.5 85.4 Low 07:11:33 - 07:25:09 2076
Penticton 07:18:21 -22.2 Dark Up 25.6 85.4 Low 07:11:33 - 07:25:09 2042
Okanagan Falls 07:18:21 -22.4 Dark Up 25.5 85.3 Low 07:11:33 - 07:25:09 2022
Oliver 07:18:19 -22.6 Dark Up 25.5 85.2 Low 07:11:31 - 07:25:07 2004
Anarchist Mountain Observatory 07:18:18 -22.8 Dark Up 25.6 85.3 Low 07:11:30 - 07:25:06 1986
Oroville 07:18:18 -22.8 Dark Up 25.6 85.2 Low 07:11:30 - 07:25:06 1978
Tonasket 07:18:18 -23.1 Dark Up 25.6 85.1 Low 07:11:30 - 07:25:06 1953
Okanogan 07:18:19 -23.4 Dark Up 25.4 84.8 Low 07:11:31 - 07:25:07 1917
Brewster 07:18:19 -23.6 Dark Up 25.3 84.6 Low 07:11:31 - 07:25:07 1887
Manson/Chelan 07:18:20 -23.8 Dark Up 25.0 84.2 Low 07:11:32 - 07:25:08 1864
Entiat 07:18:19 -24.0 Dark Up 24.9 84.0 Low 07:11:31 - 07:25:07 1840
Wenatchee 07:18:18 -24.2 Dark Up 24.9 83.9 Low 07:11:30 - 07:25:06 1813
Ellensburg 07:18:18 -24.6 Dark Up 24.7 83.5 Low 07:11:30 - 07:25:06 1769
Yakima 07:18:17 -25.0 Dark Up 24.6 83.3 Low 07:11:29 - 07:25:05 1726
Toppenish/White Swan 07:18:16 -25.2 Dark Up 24.7 83.3 Low 07:11:28 - 07:25:04 1703
Pasco 07:18:14 -25.5 Dark Up 25.5 84.1 Low 07:11:26 - 07:25:02 1694
PNWRO 07:18:13 -25.8 Dark Up 25.7 84.2 Low 07:11:25 - 07:25:01 1668
George/Umatilla 07:18:13 -25.8 Dark Up 25.4 83.8 Low 07:11:25 - 07:25:01 1658
Goldendale 07:18:16 -25.7 Dark Up 24.3 82.8 Low 07:11:28 - 07:25:04 1644
The Dalles 07:18:17 -25.9 Dark Up 24.0 82.4 Low 07:11:29 - 07:25:05 1620
Maupin 07:18:15 -26.3 Dark Up 24.1 82.3 Low 07:11:27 - 07:25:03 1576
Madras/Culver 07:18:13 -26.9 Dark Up 23.9 82.0 Low 07:11:25 - 07:25:01 1519
Sisters 07:18:14 -27.1 Dark Up 23.6 81.6 Low 07:11:26 - 07:25:02 1483
Redmond 07:18:14 -27.2 Dark Up 23.9 81.9 Low 07:11:26 - 07:25:02 1481
Bend 07:18:13 -27.4 Dark Up 23.7 81.7 Low 07:11:25 - 07:25:01 1458
Oregon Observatory 07:18:13 -27.5 Dark Up 23.6 81.5 Low 07:11:25 - 07:25:01 1440
La Pine/Gilchrist 07:18:13 -27.7 Dark Up 23.5 81.4 Low 07:11:25 - 07:25:01 1419
North Lake 07:18:11 -28.2 Dark Up 23.9 81.6 Low 07:11:23 - 07:24:59 1374
Paisley 07:18:08 -28.8 Dark Up 24.1 81.6 Low 07:11:20 - 07:24:56 1318
Chiloquin 07:18:11 -28.8 Dark Up 23.1 80.7 Low 07:11:23 - 07:24:59 1304
Klamath Falls 07:18:09 -29.1 Dark Up 23.1 80.6 Low 07:11:21 - 07:24:57 1268
Lakeview 07:18:06 -29.4 Dark Up 24.1 81.4 Low 07:11:18 - 07:24:54 1266
Tulelake 07:18:08 -29.4 Dark Up 23.3 80.6 Low 07:11:20 - 07:24:56 1241
Niwot 07:17:22 -31.9 Dark Up 35.2 89.7 Up 07:10:34 - 07:24:10 1240
Cedarville 07:18:04 -30.0 Dark Up 24.2 81.3 Low 07:11:16 - 07:24:52 1199
Fall River/Burney 07:18:06 -30.3 Dark Up 23.2 80.3 Low 07:11:18 - 07:24:54 1148
Susanville 07:18:03 -31.0 Dark Up 23.6 80.5 Low 07:11:15 - 07:24:51 1085
Gimple 07:18:03 -31.3 Dark Up 23.4 80.2 Low 07:11:15 - 07:24:51 1056
Greenville 07:18:03 -31.3 Dark Up 23.3 80.2 Low 07:11:15 - 07:24:51 1056
Quincy 07:18:02 -31.5 Dark Up 23.3 80.1 Low 07:11:14 - 07:24:50 1036
Portola 07:18:01 -31.7 Dark Up 23.7 80.3 Low 07:11:13 - 07:24:49 1024
Reno 07:17:58 -32.0 Dark Up 24.1 80.6 Low 07:11:10 - 07:24:46 999
Carson City 07:17:58 -32.4 Dark Up 24.0 80.4 Low 07:11:10 - 07:24:46 963
Yerington 07:17:56 -32.7 Dark Up 24.5 80.7 Low 07:11:08 - 07:24:44 946
Gardnerville 07:17:57 -32.6 Dark Up 24.0 80.3 Low 07:11:09 - 07:24:45 938
Hawthorne 07:17:53 -33.2 Dark Up 24.8 80.8 Low 07:11:05 - 07:24:41 901
Tonopah 07:17:48 -33.8 Dark Up 25.8 81.3 Low 07:11:00 - 07:24:36 863
Lee Vining 07:17:52 -33.7 Dark Up 24.3 80.3 Low 07:11:04 - 07:24:40 843
Bishop 07:17:48 -34.4 Dark Up 24.8 80.4 Low 07:11:00 - 07:24:36 787
Beatty 07:17:43 -35.0 Dark Up 26.0 81.0 Low 07:10:55 - 07:24:31 752
Indian Springs 07:17:39 -35.4 Dark Up 26.8 81.4 Low 07:10:51 - 07:24:27 728
Lone Pine 07:17:45 -35.1 Dark Up 24.9 80.2 Low 07:10:57 - 07:24:33 714
Henderson 07:17:35 -36.0 Dark Up 27.2 81.5 Low 07:10:47 - 07:24:23 683
Patrick 07:17:30 -36.7 Dark Up 28.0 81.8 Low 07:10:42 - 07:24:18 634
Searchlight/Boulder City 07:17:34 -36.6 Dark Up 27.2 81.3 Low 07:10:46 - 07:24:22 627
DCO 07:17:28 -37.1 Dark Up 28.6 82.0 Low 07:10:40 - 07:24:16 612
Kingman/Dolan Springs 07:17:30 -36.9 Dark Up 27.9 81.6 Low 07:10:42 - 07:24:18 610
Laughlin/Bullhead City 07:17:32 -36.9 Dark Up 27.4 81.3 Low 07:10:44 - 07:24:20 602
CPSLO 07:17:48 -36.0 Dark Up 22.6 78.3 Low 07:11:00 - 07:24:36 577
Mohave Valley 07:17:31 -37.2 Dark Up 27.4 81.2 Low 07:10:43 - 07:24:19 576
Lake Havasu City 07:17:29 -37.6 Dark Up 27.5 81.1 Low 07:10:41 - 07:24:17 540
Parker 07:17:28 -38.0 Dark Up 27.5 80.9 Low 07:10:40 - 07:24:16 507
Wildwood 07:17:39 -37.5 Dark Up 24.0 78.8 Low 07:10:51 - 07:24:27 468
Blythe 07:17:26 -38.5 Dark Up 27.2 80.5 Low 07:10:38 - 07:24:14 454
Idyllwild 07:17:33 -38.1 Dark Up 25.5 79.5 Low 07:10:45 - 07:24:21 445
Calipatria 07:17:27 -38.9 Dark Up 26.3 79.8 Low 07:10:39 - 07:24:15 398
Yuma 07:17:23 -39.4 Dark Up 27.0 80.0 Low 07:10:35 - 07:24:11 366

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, (2020/05/10 07:12UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 21.25  63
Tarazed        19:46:15.6 +10:36:48  2.7 11.59  44
PPM 109310     19:36:08.3 +22:35:08  6.1  0.71  52
PPM 109351     19:37:06.7 +22:00:21  7.2  0.23  52
PPM 109395     19:38:15.1 +21:53:03  9.0  0.15  52
523700         19:38:06.5 +22:02:06 15.7        52
Positions are for J2000

Event circumstances last updated at 2018/10/26 21:04:42 UT

Marc W. Buie, Southwest Research Institute

RECON