RECON: TNO occultation with 523750

Event between (523750) 14US224 and star UC4-588-006400 with event index number of 355858

Geocentric closest approach at 2019/11/28 06:42:35 UTC

J2000 position of star is 02:40:23.3 +27:25:59
Equinox of date position of star is 02:41:29.6 +27:30:47
Stellar brightness R=16.2, use SENSEUP=128
Star is 138 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 46.0 AU from the Sun and 45.1 AU from the Earth.
The TNO is moving 24.1 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 133 seconds.
The 1-sigma cross-track error in the shadow position is 2147 km.
The sky-plane scale is 32680.1 km/arcsec.

The TNO has an absolute magnitude Hv=5.0
Diameter=602.6 km assuming a 5% albedo -- 25.0 sec chord
Diameter=246.0 km assuming a 30% albedo -- 10.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 523750, (2019/11/28 06:43UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.9 +16:32:52  0.8 28.83 163
Hamal          02:08:18.0 +23:33:20  2.0  8.48 130
35 Ari         02:44:37.5 +27:47:27  4.7  0.73 139
PPM 091909     02:42:50.8 +27:01:31  8.3  0.57 138
PPM 091891     02:41:51.1 +27:09:10 10.0  0.37 138
PPM 091880     02:41:15.4 +27:18:22 10.2  0.22 138
523750         02:41:33.4 +27:31:03 16.2       138
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 22.2 km RECON observability=1.0 and success probability=24.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 06:41:37 -58.6 Dark Down 66.9 197.0 Up 06:30:04 - 06:53:11 627
Kelowna 06:41:36 -58.7 Dark Down 66.8 197.8 Up 06:30:03 - 06:53:10 623
Penticton 06:41:37 -59.0 Dark Down 67.1 197.7 Up 06:30:04 - 06:53:11 591
Okanagan Falls 06:41:37 -59.1 Dark Down 67.3 197.8 Up 06:30:04 - 06:53:11 573
Oliver 06:41:37 -59.3 Dark Down 67.5 197.9 Up 06:30:04 - 06:53:11 556
Anarchist Mountain Observatory 06:41:37 -59.5 Dark Down 67.6 198.5 Up 06:30:04 - 06:53:11 535
Oroville 06:41:37 -59.5 Dark Down 67.7 198.4 Up 06:30:04 - 06:53:11 529
Tonasket 06:41:38 -59.7 Dark Down 67.9 198.6 Up 06:30:04 - 06:53:11 506
Okanogan 06:41:38 -60.0 Dark Down 68.2 198.5 Up 06:30:05 - 06:53:12 476
Brewster 06:41:39 -60.1 Dark Down 68.5 198.3 Up 06:30:06 - 06:53:13 454
Manson/Chelan 06:41:41 -60.2 Dark Down 68.8 197.6 Up 06:30:07 - 06:53:14 442
Entiat 06:41:41 -60.3 Dark Down 69.0 197.6 Up 06:30:08 - 06:53:15 422
Wenatchee 06:41:42 -60.5 Dark Down 69.3 197.5 Up 06:30:08 - 06:53:15 399
Ellensburg 06:41:43 -60.8 Dark Down 69.7 197.3 Up 06:30:09 - 06:53:16 363
Yakima 06:41:43 -61.1 Dark Down 70.1 197.6 Up 06:30:10 - 06:53:17 322
Toppenish/White Swan 06:41:43 -61.4 Dark Down 70.3 198.2 Up 06:30:10 - 06:53:17 296
Pasco 06:41:40 -61.9 Dark Down 70.1 201.5 Up 06:30:06 - 06:53:13 252
Goldendale 06:41:46 -61.6 Dark Down 70.9 197.6 Up 06:30:12 - 06:53:19 252
The Dalles 06:41:47 -61.7 Dark Down 71.2 196.9 Up 06:30:13 - 06:53:20 239
George/Umatilla 06:41:41 -62.1 Dark Down 70.5 201.3 Up 06:30:07 - 06:53:14 224
PNWRO 06:41:39 -62.2 Dark Down 70.3 202.4 Up 06:30:06 - 06:53:13 221
Maupin 06:41:47 -62.1 Dark Down 71.6 197.5 Up 06:30:13 - 06:53:20 194
Madras/Culver 06:41:48 -62.5 Dark Down 72.1 197.9 Up 06:30:14 - 06:53:21 140
Sisters 06:41:49 -62.5 Dark Down 72.5 197.0 Up 06:30:16 - 06:53:23 118
Redmond 06:41:49 -62.7 Dark Down 72.5 198.1 Up 06:30:15 - 06:53:22 105
Bend 06:41:49 -62.8 Dark Down 72.7 198.0 Up 06:30:16 - 06:53:23 87
Oregon Observatory 06:41:50 -62.9 Dark Down 72.9 197.8 Up 06:30:16 - 06:53:23 73
La Pine/Gilchrist 06:41:50 -63.1 Dark Down 73.1 197.8 Up 06:30:17 - 06:53:24 54
North Lake 06:41:49 -63.7 Dark Down 73.4 200.0 Up 06:30:16 - 06:53:23 -7
Chiloquin 06:41:53 -63.7 Dark Down 74.2 197.9 Up 06:30:19 - 06:53:26 -49
Paisley 06:41:49 -64.3 Dark Down 73.8 201.8 Up 06:30:15 - 06:53:22 -73
Klamath Falls 06:41:53 -64.0 Dark Down 74.5 198.5 Up 06:30:19 - 06:53:26 -86
Tulelake 06:41:53 -64.4 Dark Down 74.7 199.8 Up 06:30:19 - 06:53:26 -122
Lakeview 06:41:49 -64.7 Dark Down 74.2 203.0 Up 06:30:15 - 06:53:22 -130
Cedarville 06:41:49 -65.3 Dark Down 74.8 204.6 Up 06:30:16 - 06:53:23 -202
Fall River/Burney 06:41:53 -65.1 Dark Down 75.6 201.3 Up 06:30:20 - 06:53:27 -217
Susanville 06:41:52 -65.9 Dark Down 75.9 204.8 Up 06:30:19 - 06:53:26 -303
Greenville 06:41:53 -66.0 Dark Down 76.3 204.3 Up 06:30:20 - 06:53:27 -323
Gimple 06:41:53 -66.0 Dark Down 76.2 204.5 Up 06:30:19 - 06:53:26 -326
Quincy 06:41:54 -66.1 Dark Down 76.4 204.6 Up 06:30:20 - 06:53:27 -344
Portola 06:41:53 -66.5 Dark Down 76.4 206.5 Up 06:30:19 - 06:53:26 -371
Reno 06:41:51 -67.0 Dark Down 76.4 209.2 Up 06:30:17 - 06:53:24 -417
Carson City 06:41:51 -67.3 Dark Down 76.7 210.1 Up 06:30:17 - 06:53:24 -454
Gardnerville 06:41:51 -67.5 Dark Down 76.9 210.8 Up 06:30:18 - 06:53:25 -481
Yerington 06:41:49 -67.8 Dark Down 76.6 212.6 Up 06:30:16 - 06:53:23 -492
Hawthorne 06:41:48 -68.4 Dark Down 76.8 215.5 Up 06:30:15 - 06:53:22 -555
Lee Vining 06:41:50 -68.6 Dark Down 77.5 215.3 Up 06:30:17 - 06:53:24 -600
Tonopah 06:41:44 -69.5 Dark Down 76.5 221.2 Up 06:30:10 - 06:53:17 -643
Bishop 06:41:49 -69.4 Dark Down 77.6 219.4 Up 06:30:15 - 06:53:22 -683
Niwot 06:41:02 -71.1 Dark Down 67.9 241.7 Up 06:29:29 - 06:52:36 -688
Lone Pine 06:41:49 -70.1 Dark Down 78.0 222.9 Up 06:30:15 - 06:53:22 -772
Beatty 06:41:44 -70.6 Dark Down 77.1 226.0 Up 06:30:10 - 06:53:17 -776
CPSLO 06:42:00 -69.5 Dark Down 80.3 217.5 Up 06:30:26 - 06:53:33 -832
Indian Springs 06:41:40 -71.4 Dark Down 76.6 230.1 Up 06:30:07 - 06:53:14 -839
Henderson 06:41:38 -72.1 Dark Down 76.5 233.7 Up 06:30:05 - 06:53:12 -914
Searchlight/Boulder City 06:41:39 -72.6 Dark Down 76.8 235.9 Up 06:30:05 - 06:53:12 -976
Patrick 06:41:35 -73.2 Dark Down 76.1 238.6 Up 06:30:02 - 06:53:09 -1009
Laughlin/Bullhead City 06:41:38 -73.0 Dark Down 76.7 237.8 Up 06:30:05 - 06:53:12 -1017
Wildwood 06:41:54 -71.5 Dark Down 80.0 230.5 Up 06:30:20 - 06:53:27 -1020
Kingman/Dolan Springs 06:41:36 -73.3 Dark Down 76.4 238.9 Up 06:30:03 - 06:53:10 -1028
Mohave Valley 06:41:38 -73.2 Dark Down 76.9 238.8 Up 06:30:05 - 06:53:12 -1046
DCO 06:41:33 -73.7 Dark Down 75.8 241.2 Up 06:30:00 - 06:53:07 -1059
Lake Havasu City 06:41:38 -73.7 Dark Down 76.9 240.9 Up 06:30:05 - 06:53:12 -1095
Idyllwild 06:41:48 -72.9 Dark Down 79.0 238.0 Up 06:30:14 - 06:53:21 -1112
Parker 06:41:38 -74.0 Dark Down 77.1 242.3 Up 06:30:05 - 06:53:12 -1133
Blythe 06:41:40 -74.2 Dark Down 77.5 243.7 Up 06:30:07 - 06:53:14 -1181
Calipatria 06:41:44 -74.0 Dark Down 78.4 243.7 Up 06:30:11 - 06:53:18 -1209
Yuma 06:41:42 -74.9 Dark Down 77.9 247.5 Up 06:30:08 - 06:53:15 -1279

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 523750, (2019/11/28 06:43UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 28.83 163
Hamal          02:07:10.7 +23:27:42  2.0  8.48 130
35 Ari         02:43:27.1 +27:42:25  4.7  0.73 139
PPM 091909     02:41:40.7 +26:56:28  8.3  0.57 138
PPM 091891     02:40:41.1 +27:04:06 10.0  0.37 138
PPM 091880     02:40:05.3 +27:13:17 10.2  0.22 138
523750         02:40:23.3 +27:25:59 16.2       138
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:35:47 UT

Marc W. Buie, Southwest Research Institute

RECON