RECON: TNO occultation with 79360

Event between (79360) Sila-Nunam and star GA1020:03328201 with event index number of 339310

Geocentric closest approach at 2019/05/25 05:45:07 UTC

J2000 position of star is 09:32:02.9 +13:53:58
Equinox of date position of star is 09:33:05.5 +13:48:51
Stellar brightness G=16.8, use SENSEUP=128
Star is 176 degrees from the moon. Moon is 64% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 43.4 AU from the Sun and 43.7 AU from the Earth.
The TNO is moving 10.6 km/sec on the sky relative to the star, or, 1.2 arcsec/hr.
The 1-sigma error in the time of the event is 432 seconds.
The 1-sigma cross-track error in the shadow position is 2269 km.
The sky-plane scale is 31663.0 km/arcsec.

The TNO has an absolute magnitude Hv=5.3
Diameter=524.8 km assuming a 5% albedo -- 49.3 sec chord
Diameter=214.3 km assuming a 30% albedo -- 20.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 79360, (2019/05/25 05:45UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:24.2 +11:52:18  1.3  9.06 168
5Xi Leo        09:32:59.4 +11:12:47  5.0  2.60 173
PPM 126596     09:36:12.9 +13:59:18  7.5  0.77 175
PPM 126553     09:33:32.2 +13:45:36  9.1  0.12 176
79360          09:33:06.4 +13:48:47 16.8       175
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 2.1 sigma about the mid-time.
The median site spacing is 10.6 km RECON observability=0.9 and success probability=10.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:48:44 -13.9 AT Down 25.1 261.6 Low 05:33:44 - 06:03:44 -289
Summerland 05:48:44 -13.8 AT Down 25.4 261.4 Low 05:33:44 - 06:03:44 -300
Penticton 05:48:47 -14.2 AT Down 25.3 261.7 Low 05:33:47 - 06:03:47 -311
Okanagan Falls 05:48:49 -14.3 AT Down 25.3 261.8 Low 05:33:49 - 06:03:49 -321
Oliver 05:48:50 -14.5 AT Down 25.3 261.9 Low 05:33:50 - 06:03:50 -329
Anarchist Mountain Observatory 05:48:52 -14.7 AT Down 25.2 262.1 Low 05:33:52 - 06:03:52 -333
Oroville 05:48:53 -14.8 AT Down 25.3 262.1 Low 05:33:53 - 06:03:53 -338
Tonasket 05:48:55 -15.0 AT Down 25.3 262.2 Low 05:33:55 - 06:03:55 -350
Okanogan 05:48:58 -15.2 AT Down 25.4 262.2 Low 05:33:58 - 06:03:58 -371
Brewster 05:49:00 -15.4 AT Down 25.6 262.2 Low 05:34:00 - 06:04:00 -390
Manson/Chelan 05:49:01 -15.4 AT Down 25.9 262.0 Low 05:34:01 - 06:04:01 -410
Entiat 05:49:03 -15.6 AT Down 26.0 262.1 Low 05:34:03 - 06:04:03 -423
Wenatchee 05:49:06 -15.8 AT Down 26.0 262.1 Low 05:34:06 - 06:04:06 -439
Ellensburg 05:49:08 -16.1 AT Down 26.2 262.2 Low 05:34:08 - 06:04:08 -467
Pasco 05:49:18 -17.2 AT Down 25.3 263.7 Low 05:34:18 - 06:04:18 -472
Niwot 05:50:33 -27.0 Dark Down 15.0 275.7 Really Low 05:35:33 - 06:05:33 -478
PNWRO 05:49:21 -17.5 AT Down 25.2 264.0 Low 05:34:21 - 06:04:21 -479
SwRI 05:50:33 -27.1 Dark Down 15.0 275.7 Really Low 05:35:33 - 06:05:33 -486
Yakima 05:49:12 -16.4 AT Down 26.3 262.4 Low 05:34:12 - 06:04:12 -490
George/Umatilla 05:49:21 -17.4 AT Down 25.5 263.7 Low 05:34:21 - 06:04:21 -496
Toppenish/White Swan 05:49:14 -16.7 AT Down 26.2 262.6 Low 05:34:14 - 06:04:14 -497
Goldendale 05:49:18 -17.0 AT Down 26.6 262.6 Low 05:34:18 - 06:04:18 -539
The Dalles 05:49:19 -17.0 AT Down 26.8 262.4 Low 05:34:19 - 06:04:19 -561
Maupin 05:49:23 -17.4 AT Down 26.8 262.7 Low 05:34:23 - 06:04:23 -582
Madras/Culver 05:49:28 -17.9 AT Down 26.9 263.0 Low 05:34:28 - 06:04:28 -615
Redmond 05:49:31 -18.2 Dark Down 27.0 263.1 Low 05:34:31 - 06:04:31 -637
Sisters 05:49:30 -18.0 AT Down 27.2 262.8 Low 05:34:30 - 06:04:30 -647
Bend 05:49:34 -18.3 Dark Down 27.1 263.1 Low 05:34:34 - 06:04:34 -654
Oregon Observatory 05:49:34 -18.4 Dark Down 27.2 263.1 Low 05:34:34 - 06:04:34 -667
La Pine/Gilchrist 05:49:36 -18.6 Dark Down 27.3 263.2 Low 05:34:36 - 06:04:36 -681
North Lake 05:49:41 -19.2 Dark Down 26.9 263.9 Low 05:34:41 - 06:04:41 -691
Paisley 05:49:47 -19.8 Dark Down 26.6 264.4 Low 05:34:47 - 06:04:47 -714
Lakeview 05:49:51 -20.3 Dark Down 26.5 264.8 Low 05:34:51 - 06:04:51 -740
Chiloquin 05:49:45 -19.4 Dark Down 27.6 263.5 Low 05:34:45 - 06:04:45 -758
Cedarville 05:49:58 -20.9 Dark Down 26.4 265.3 Low 05:34:58 - 06:04:58 -775
Klamath Falls 05:49:48 -19.7 Dark Down 27.6 263.8 Low 05:34:48 - 06:04:48 -777
Tulelake 05:49:50 -20.0 Dark Down 27.4 264.2 Low 05:34:50 - 06:04:50 -785
Fall River/Burney 05:50:00 -20.8 Dark Down 27.4 264.7 Low 05:35:00 - 06:05:00 -840
Susanville 05:50:06 -21.7 Dark Down 26.9 265.6 Low 05:35:06 - 06:05:06 -859
Gimple 05:50:08 -21.8 Dark Down 27.0 265.6 Low 05:35:08 - 06:05:08 -883
Greenville 05:50:08 -21.8 Dark Down 27.1 265.5 Low 05:35:08 - 06:05:08 -885
Reno 05:50:16 -22.8 Dark Down 26.2 266.6 Low 05:35:16 - 06:05:16 -891
Portola 05:50:13 -22.3 Dark Down 26.7 266.0 Low 05:35:13 - 06:05:13 -893
Quincy 05:50:09 -22.0 Dark Down 27.1 265.6 Low 05:35:09 - 06:05:09 -898
Yerington 05:50:22 -23.5 Dark Down 25.7 267.3 Low 05:35:22 - 06:05:22 -908
Carson City 05:50:19 -23.1 Dark Down 26.2 266.8 Low 05:35:19 - 06:05:19 -914
Tonopah 05:50:34 -25.1 Dark Down 24.2 269.0 Low 05:35:34 - 06:05:34 -914
Hawthorne 05:50:28 -24.2 Dark Down 25.3 267.9 Low 05:35:28 - 06:05:28 -924
Gardnerville 05:50:21 -23.3 Dark Down 26.2 266.9 Low 05:35:21 - 06:05:21 -929
Indian Springs 05:50:50 -27.1 Dark Down 22.9 270.6 Low 05:35:50 - 06:05:50 -970
Lee Vining 05:50:32 -24.4 Dark Down 25.7 267.8 Low 05:35:32 - 06:05:32 -975
Beatty 05:50:45 -26.3 Dark Down 23.8 269.8 Low 05:35:45 - 06:05:45 -978
Henderson 05:50:56 -27.8 Dark Down 22.4 271.3 Low 05:35:56 - 06:05:56 -986
Bishop 05:50:39 -25.3 Dark Down 25.1 268.6 Low 05:35:39 - 06:05:39 -994
Patrick 05:51:03 -28.8 Dark Down 21.4 272.2 Low 05:36:03 - 06:06:03 -997
DCO 05:51:06 -29.3 Dark Down 20.8 272.7 Low 05:36:06 - 06:06:06 -998
Kingman/Dolan Springs 05:51:04 -28.9 Dark Down 21.5 272.2 Low 05:36:04 - 06:06:04 -1018
Searchlight/Boulder City 05:51:02 -28.3 Dark Down 22.3 271.5 Low 05:36:02 - 06:06:02 -1024
Laughlin/Bullhead City 05:51:03 -28.7 Dark Down 22.0 271.9 Low 05:36:03 - 06:06:03 -1034
Lone Pine 05:50:44 -26.1 Dark Down 24.9 269.2 Low 05:35:44 - 06:05:44 -1036
Mohave Valley 05:51:06 -29.0 Dark Down 21.9 272.0 Low 05:36:06 - 06:06:06 -1053
Lake Havasu City 05:51:10 -29.4 Dark Down 21.7 272.3 Low 05:36:10 - 06:06:10 -1073
Parker 05:51:12 -29.8 Dark Down 21.7 272.5 Low 05:36:12 - 06:06:12 -1097
Blythe 05:51:17 -30.1 Dark Down 21.9 272.5 Low 05:36:17 - 06:06:17 -1143
Idyllwild 05:51:13 -29.1 Dark Down 23.7 271.3 Low 05:36:13 - 06:06:13 -1197
CPSLO 05:50:49 -26.0 Dark Down 27.0 268.3 Low 05:35:49 - 06:05:49 -1204
Calipatria 05:51:19 -30.2 Dark Down 22.6 272.2 Low 05:36:19 - 06:06:19 -1205
Yuma 05:51:24 -30.9 Dark Down 21.8 272.9 Low 05:36:24 - 06:06:24 -1210
Wildwood 05:51:05 -28.0 Dark Down 25.3 270.1 Low 05:36:05 - 06:06:05 -1227

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 79360, (2019/05/25 05:45UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3  9.06 168
5Xi Leo        09:31:56.6 +11:17:58  5.0  2.60 173
PPM 126596     09:35:09.5 +14:04:32  7.5  0.77 175
PPM 126553     09:32:28.8 +13:50:48  9.1  0.12 176
79360          09:32:02.9 +13:53:58 16.8       176
Positions are for J2000

Event circumstances last updated at 2019/02/12 08:06:57 UT

Marc W. Buie, Southwest Research Institute

RECON