RECON: TNO occultation with 529780

Event between (529780) 10MQ116 and star GA1120:00167393 with event index number of 1597267

Geocentric closest approach at 2020/01/20 04:50:02 UTC

J2000 position of star is 01:23:57.5 +23:46:49
Equinox of date position of star is 01:25:01.6 +23:52:54
Stellar brightness G=14.9, use SENSEUP=128
Star is 141 degrees from the moon. Moon is 22% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 46.9 AU from the Sun and 46.9 AU from the Earth.
The TNO is moving 6.6 km/sec on the sky relative to the star, or, 0.7 arcsec/hr.
The 1-sigma error in the time of the event is 552 seconds.
The 1-sigma cross-track error in the shadow position is 3409 km.
The sky-plane scale is 34030.9 km/arcsec.

The TNO has an absolute magnitude Hv=5.4
Diameter=501.2 km assuming a 5% albedo -- 75.6 sec chord
Diameter=204.6 km assuming a 30% albedo -- 30.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 529780, (2020/01/20 04:50UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.4 +16:32:53  0.8 45.43 173
6Bet Ari       01:55:45.1 +20:54:19  2.6  7.69 148
PPM 090772     01:26:41.7 +23:36:55  6.5  0.46 142
PPM 090755     01:25:36.8 +24:02:57  9.6  0.21 141
529780         01:25:03.4 +23:53:04 14.9       142
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 1.6 sigma about the mid-time.
The median site spacing is 7.1 km RECON observability=1.0 and success probability=0.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
SwRI 04:55:00 -54.8 Dark Down 32.6 275.1 Up 04:40:00 - 05:10:00 10946
Kelowna 04:51:07 -41.2 Dark Down 42.5 256.1 Up 04:36:07 - 05:06:07 10688
Penticton 04:51:07 -41.2 Dark Down 42.7 256.3 Up 04:36:07 - 05:06:07 10668
Summerland 04:51:07 -41.1 Dark Down 42.8 256.2 Up 04:36:07 - 05:06:07 10665
Okanagan Falls 04:51:07 -41.3 Dark Down 42.8 256.5 Up 04:36:07 - 05:06:07 10660
Anarchist Mountain Observatory 04:51:07 -41.5 Dark Down 42.7 257.0 Up 04:36:07 - 05:06:07 10658
Oliver 04:51:07 -41.3 Dark Down 42.8 256.6 Up 04:36:07 - 05:06:07 10655
Oroville 04:51:07 -41.5 Dark Down 42.8 257.0 Up 04:36:07 - 05:06:07 10652
Tonasket 04:51:07 -41.6 Dark Down 42.8 257.2 Up 04:36:07 - 05:06:07 10644
Okanogan 04:51:07 -41.6 Dark Down 43.0 257.3 Up 04:36:07 - 05:06:07 10625
Brewster 04:51:07 -41.5 Dark Down 43.2 257.4 Up 04:36:07 - 05:06:07 10606
Manson/Chelan 04:51:07 -41.3 Dark Down 43.5 257.3 Up 04:36:07 - 05:06:07 10582
Wenatchee 04:51:07 -41.4 Dark Down 43.7 257.6 Up 04:36:07 - 05:06:07 10556
PNWRO 04:52:43 -43.0 Dark Down 42.7 260.4 Up 04:37:43 - 05:07:43 10555
Pasco 04:52:38 -42.7 Dark Down 42.8 260.0 Up 04:37:38 - 05:07:38 10555
George/Umatilla 04:52:45 -42.7 Dark Down 43.0 260.1 Up 04:37:45 - 05:07:45 10531
Ellensburg 04:51:07 -41.3 Dark Down 43.9 257.8 Up 04:36:07 - 05:06:07 10530
Yakima 04:51:07 -41.4 Dark Down 44.0 258.1 Up 04:36:07 - 05:06:07 10514
Toppenish/White Swan 04:52:30 -41.8 Dark Down 43.7 258.8 Up 04:37:30 - 05:07:30 10500
Goldendale 04:52:35 -41.7 Dark Down 44.1 259.0 Up 04:37:35 - 05:07:35 10457
The Dalles 04:52:38 -41.5 Dark Down 44.4 258.9 Up 04:37:38 - 05:07:38 10429
Maupin 04:52:48 -41.7 Dark Down 44.4 259.4 Up 04:37:48 - 05:07:48 10416
Madras/Culver 04:52:52 -41.8 Dark Down 44.5 259.9 Up 04:37:52 - 05:07:52 10390
Redmond 04:52:57 -41.9 Dark Down 44.6 260.2 Up 04:37:57 - 05:07:57 10371
Bend 04:53:00 -41.8 Dark Down 44.7 260.3 Up 04:38:00 - 05:08:00 10354
Sisters 04:52:56 -41.6 Dark Down 44.8 259.9 Up 04:37:56 - 05:07:56 10352
Oregon Observatory 04:53:06 -41.8 Dark Down 44.8 260.4 Up 04:38:06 - 05:08:06 10340
North Lake 04:53:13 -42.4 Dark Down 44.5 261.5 Up 04:38:13 - 05:08:13 10337
Paisley 04:53:24 -42.8 Dark Down 44.3 262.4 Up 04:38:24 - 05:08:24 10329
La Pine/Gilchrist 04:53:04 -41.8 Dark Down 44.9 260.6 Up 04:38:04 - 05:08:04 10327
Patrick 04:55:39 -49.7 Dark Down 38.9 273.6 Up 04:40:39 - 05:10:39 10318
Lakeview 04:53:33 -43.0 Dark Down 44.2 263.0 Up 04:38:33 - 05:08:33 10315
Kingman/Dolan Springs 04:55:42 -49.6 Dark Down 39.0 273.7 Up 04:40:42 - 05:10:42 10296
Cedarville 04:53:44 -43.3 Dark Down 44.1 263.8 Up 04:38:44 - 05:08:44 10293
Henderson 04:55:27 -48.7 Dark Down 39.9 272.4 Up 04:40:27 - 05:10:27 10291
Indian Springs 04:55:14 -48.0 Dark Down 40.5 271.5 Up 04:40:14 - 05:10:14 10281
Tonopah 04:54:48 -46.4 Dark Down 41.8 269.3 Up 04:39:48 - 05:09:48 10275
Laughlin/Bullhead City 04:55:40 -49.2 Dark Down 39.4 273.4 Up 04:40:40 - 05:10:40 10268
Searchlight/Boulder City 04:55:34 -48.9 Dark Down 39.8 272.9 Up 04:40:34 - 05:10:34 10265
Chiloquin 04:53:18 -41.8 Dark Down 45.3 261.4 Up 04:38:18 - 05:08:18 10257
Mohave Valley 04:55:46 -49.3 Dark Down 39.4 273.6 Up 04:40:46 - 05:10:46 10254
Tulelake 04:53:31 -42.3 Dark Down 45.0 262.4 Up 04:38:31 - 05:08:31 10247
Lake Havasu City 04:55:52 -49.6 Dark Down 39.1 274.1 Up 04:40:52 - 05:10:52 10246
Klamath Falls 04:53:25 -42.0 Dark Down 45.2 261.9 Up 04:38:25 - 05:08:25 10245
Beatty 04:55:07 -47.1 Dark Down 41.4 270.6 Up 04:40:07 - 05:10:07 10241
Parker 04:55:57 -49.7 Dark Down 39.1 274.4 Up 04:40:57 - 05:10:57 10230
Hawthorne 04:54:34 -45.2 Dark Down 42.9 267.9 Up 04:39:34 - 05:09:34 10225
Yerington 04:54:24 -44.7 Dark Down 43.4 267.1 Up 04:39:24 - 05:09:24 10220
Reno 04:54:15 -44.1 Dark Down 43.9 266.1 Up 04:39:15 - 05:09:15 10214
Susanville 04:53:59 -43.2 Dark Down 44.5 264.6 Up 04:38:59 - 05:08:59 10214
Fall River/Burney 04:53:42 -42.5 Dark Down 45.0 263.4 Up 04:38:42 - 05:08:42 10207
Carson City 04:54:20 -44.2 Dark Down 43.9 266.5 Up 04:39:20 - 05:09:20 10197
Portola 04:54:06 -43.5 Dark Down 44.4 265.3 Up 04:39:06 - 05:09:06 10193
Gimple 04:53:58 -43.1 Dark Down 44.7 264.7 Up 04:38:58 - 05:08:58 10189
Gardnerville 04:54:23 -44.2 Dark Down 43.8 266.7 Up 04:39:23 - 05:09:23 10187
Blythe 04:56:02 -49.5 Dark Down 39.3 274.7 Up 04:41:02 - 05:11:02 10186
Greenville 04:53:55 -43.0 Dark Down 44.8 264.6 Up 04:38:55 - 05:08:55 10185
Bishop 04:54:52 -45.6 Dark Down 42.7 269.2 Up 04:39:52 - 05:09:52 10178
Quincy 04:54:01 -43.1 Dark Down 44.8 264.9 Up 04:39:01 - 05:09:01 10175
Lee Vining 04:54:40 -44.9 Dark Down 43.3 268.1 Up 04:39:40 - 05:09:40 10170
Lone Pine 04:55:02 -46.1 Dark Down 42.4 270.1 Up 04:40:02 - 05:10:02 10156
Yuma 04:56:16 -49.6 Dark Down 39.2 275.5 Up 04:41:16 - 05:11:16 10134
Calipatria 04:56:05 -48.8 Dark Down 40.0 274.7 Up 04:41:05 - 05:11:05 10108
Idyllwild 04:55:48 -47.7 Dark Down 41.1 273.5 Up 04:40:48 - 05:10:48 10076
Wildwood 04:55:38 -46.1 Dark Down 42.7 272.2 Up 04:40:38 - 05:10:38 9992
CPSLO 04:55:11 -44.2 Dark Down 44.5 269.8 Up 04:40:11 - 05:10:11 9945

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 529780, (2020/01/20 04:50UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 45.43 173
6Bet Ari       01:54:38.5 +20:48:27  2.6  7.69 148
PPM 090772     01:25:35.7 +23:30:41  6.5  0.46 142
PPM 090755     01:24:30.8 +23:56:42  9.6  0.21 141
529780         01:23:57.5 +23:46:49 14.9       141
Positions are for J2000

Event circumstances last updated at 2019/07/02 02:26:53 UT

Marc W. Buie, Southwest Research Institute

RECON