RECON: TNO occultation with 523700

Event between (523700) 14GM54 and star UC4-569-084372 with event index number of 324303

Geocentric closest approach at 2019/06/01 11:06:39 UTC

J2000 position of star is 19:25:18.6 +23:38:29
Equinox of date position of star is 19:26:06.2 +23:40:47
Stellar brightness R=14.7, use SENSEUP=128
Star is 106 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=21.5

[RECON map]
TNO is 26.7 AU from the Sun and 26.2 AU from the Earth.
The TNO is moving 18.5 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 70 seconds.
The 1-sigma cross-track error in the shadow position is 1075 km.
The sky-plane scale is 18999.8 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 12.4 sec chord
Diameter=93.5 km assuming a 30% albedo -- 5.1 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523700, (2019/06/01 11:07UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:35.8 +38:48:10  0.0 18.30 108
Tarazed        19:47:10.9 +10:39:42  2.7 13.95 106
PPM 108817     19:21:44.1 +22:14:10  6.5  1.76 108
PPM 108900     19:24:18.6 +24:00:53  7.7  0.53 106
PPM 108983     19:26:25.8 +23:40:17  9.9  0.07 106
523700         19:26:07.7 +23:40:51 14.7       106
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 26.3 km RECON observability=0.1 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)
Kelowna 11:07:26 -6.4 NT Down 63.4 191.9 Up 11:01:04 - 11:13:47 8066
Summerland 11:07:26 -6.6 NT Down 63.4 191.2 Up 11:01:04 - 11:13:47 8049
Penticton 11:07:25 -6.8 NT Down 63.7 191.7 Up 11:01:03 - 11:13:46 8028
Okanagan Falls 11:07:23 -6.9 NT Down 63.9 191.7 Up 11:01:01 - 11:13:44 8011
Oliver 11:07:23 -7.0 NT Down 64.1 191.8 Up 11:01:02 - 11:13:45 7998
Anarchist Mountain Observatory 11:07:21 -7.1 NT Down 64.2 192.3 Up 11:01:00 - 11:13:43 7990
Oroville 11:07:21 -7.2 NT Down 64.3 192.2 Up 11:00:59 - 11:13:42 7981
Tonasket 11:07:23 -7.3 NT Down 64.5 192.3 Up 11:01:01 - 11:13:44 7961
Okanogan 11:07:22 -7.6 NT Down 64.9 192.1 Up 11:01:01 - 11:13:44 7926
Brewster 11:07:22 -7.9 NT Down 65.2 191.8 Up 11:01:01 - 11:13:44 7895
Manson/Chelan 11:07:21 -8.3 NT Down 65.4 191.1 Up 11:00:59 - 11:13:42 7864
Entiat 11:07:22 -8.4 NT Down 65.7 191.0 Up 11:01:01 - 11:13:44 7842
Wenatchee 11:07:22 -8.7 NT Down 65.9 190.9 Up 11:01:01 - 11:13:44 7816
Niwot 11:06:03 -5.3 CT Up 66.6 231.1 Up 10:59:42 - 11:12:25 7806
Ellensburg 11:07:21 -9.1 NT Down 66.4 190.6 Up 11:00:59 - 11:13:42 7772
Pasco 11:07:13 -9.0 NT Down 66.9 194.1 Up 11:00:52 - 11:13:35 7758
PNWRO 11:07:12 -9.0 NT Down 67.1 194.8 Up 11:00:50 - 11:13:33 7744
Yakima 11:07:20 -9.4 NT Down 66.8 190.7 Up 11:00:58 - 11:13:41 7735
Toppenish/White Swan 11:07:20 -9.5 NT Down 66.9 191.2 Up 11:00:58 - 11:13:41 7722
George/Umatilla 11:07:12 -9.3 NT Down 67.2 193.8 Up 11:00:51 - 11:13:34 7720
Goldendale 11:07:19 -10.1 NT Down 67.5 190.4 Up 11:00:57 - 11:13:40 7657
The Dalles 11:07:20 -10.4 NT Down 67.8 189.7 Up 11:00:58 - 11:13:41 7624
Maupin 11:07:19 -10.7 NT Down 68.2 190.1 Up 11:00:57 - 11:13:40 7590
Madras/Culver 11:07:17 -11.1 NT Down 68.8 190.2 Up 11:00:56 - 11:13:39 7539
Redmond 11:07:17 -11.4 NT Down 69.1 190.2 Up 11:00:55 - 11:13:38 7504
Sisters 11:07:18 -11.6 NT Down 69.1 189.2 Up 11:00:57 - 11:13:40 7491
Bend 11:07:16 -11.6 NT Down 69.3 190.0 Up 11:00:55 - 11:13:38 7479
Oregon Observatory 11:07:17 -11.8 NT Down 69.5 189.7 Up 11:00:55 - 11:13:38 7459
La Pine/Gilchrist 11:07:14 -12.0 NT Down 69.7 189.6 Up 11:00:52 - 11:13:35 7438
North Lake 11:07:13 -12.0 AT Down 70.1 191.4 Up 11:00:52 - 11:13:35 7421
Paisley 11:07:09 -12.2 AT Down 70.6 192.7 Up 11:00:47 - 11:13:30 7384
Lakeview 11:07:07 -12.5 AT Down 71.0 193.5 Up 11:00:45 - 11:13:28 7345
Chiloquin 11:07:13 -13.0 AT Down 70.9 189.2 Up 11:00:52 - 11:13:35 7322
Klamath Falls 11:07:12 -13.2 AT Down 71.2 189.5 Up 11:00:51 - 11:13:34 7293
Cedarville 11:07:05 -12.9 AT Down 71.6 194.4 Up 11:00:43 - 11:13:26 7291
Tulelake 11:07:10 -13.2 AT Down 71.4 190.5 Up 11:00:48 - 11:13:31 7280
Fall River/Burney 11:07:08 -13.9 AT Down 72.3 191.2 Up 11:00:47 - 11:13:30 7199
Susanville 11:07:04 -13.9 AT Down 72.8 193.9 Up 11:00:42 - 11:13:25 7169
Gimple 11:07:04 -14.3 AT Down 73.1 193.4 Up 11:00:42 - 11:13:25 7135
Greenville 11:07:04 -14.3 AT Down 73.1 193.2 Up 11:00:42 - 11:13:25 7132
Reno 11:06:58 -14.1 AT Down 73.5 197.1 Up 11:00:36 - 11:13:19 7122
Portola 11:07:01 -14.3 AT Down 73.4 194.9 Up 11:00:40 - 11:13:23 7120
Quincy 11:07:02 -14.4 AT Down 73.3 193.3 Up 11:00:41 - 11:13:24 7113
Yerington 11:06:54 -14.2 AT Down 73.9 199.8 Up 11:00:33 - 11:13:16 7097
Tonopah 11:06:44 -13.7 AT Down 74.1 207.0 Up 11:00:22 - 11:13:05 7092
Carson City 11:06:57 -14.4 AT Down 73.8 197.6 Up 11:00:35 - 11:13:18 7089
Hawthorne 11:06:50 -14.2 AT Down 74.1 202.0 Up 11:00:28 - 11:13:11 7076
Gardnerville 11:06:56 -14.5 AT Down 74.1 198.0 Up 11:00:34 - 11:13:17 7068
Indian Springs 11:06:33 -13.9 AT Down 74.8 214.3 Up 11:00:11 - 11:12:54 7021
Beatty 11:06:38 -14.3 AT Down 75.0 210.4 Up 11:00:16 - 11:12:59 7004
Henderson 11:06:28 -13.8 AT Down 74.9 217.5 Up 11:00:06 - 11:12:49 7003
Lee Vining 11:06:50 -14.9 AT Down 74.8 201.1 Up 11:00:28 - 11:13:11 7003
DCO 11:06:16 -13.3 AT Down 74.7 224.8 Up 10:59:55 - 11:12:38 7000
Patrick 11:06:19 -13.5 AT Down 74.8 222.1 Up 10:59:58 - 11:12:41 6996
Bishop 11:06:44 -14.9 AT Down 75.2 204.3 Up 11:00:23 - 11:13:06 6977
Kingman/Dolan Springs 11:06:19 -13.8 AT Down 75.1 222.1 Up 10:59:58 - 11:12:41 6967
Searchlight/Boulder City 11:06:26 -14.2 AT Down 75.3 219.0 Up 11:00:04 - 11:12:47 6953
Laughlin/Bullhead City 11:06:23 -14.1 AT Down 75.4 220.7 Up 11:00:01 - 11:12:44 6941
Lone Pine 11:06:42 -15.2 AT Down 75.7 206.7 Up 11:00:20 - 11:13:03 6920
Mohave Valley 11:06:23 -14.3 AT Down 75.6 221.4 Up 11:00:01 - 11:12:44 6916
Lake Havasu City 11:06:19 -14.4 AT Down 75.8 223.1 Up 10:59:57 - 11:12:40 6890
Parker 11:06:18 -14.6 AT Down 76.0 224.2 Up 10:59:56 - 11:12:39 6859
Blythe 11:06:18 -15.2 AT Down 76.5 224.8 Up 10:59:57 - 11:12:40 6797
Idyllwild 11:06:26 -16.4 AT Down 77.6 217.6 Up 11:00:05 - 11:12:48 6711
Yuma 11:06:14 -15.8 AT Down 77.2 227.5 Up 10:59:53 - 11:12:36 6709
Calipatria 11:06:21 -16.1 AT Down 77.4 223.4 Up 10:59:59 - 11:12:42 6708
CPSLO 11:06:49 -17.6 AT Down 77.7 199.2 Up 11:00:27 - 11:13:10 6687
Wildwood 11:06:37 -17.3 AT Down 78.2 209.7 Up 11:00:15 - 11:12:58 6661

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, (2019/06/01 11:07UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 18.30 108
Tarazed        19:46:15.6 +10:36:48  2.7 13.95 106
PPM 108817     19:20:54.3 +22:11:55  6.5  1.76 108
PPM 108900     19:23:29.7 +23:58:34  7.7  0.53 106
PPM 108983     19:25:36.7 +23:37:55  9.9  0.07 106
523700         19:25:18.6 +23:38:29 14.7       106
Positions are for J2000

Event circumstances last updated at 2018/10/24 21:32:31 UT

Marc W. Buie, Southwest Research Institute

RECON