RECON: TNO occultation with 28978

Event between (28978) Ixion and star GA0600:26827363 with event index number of 282972

Geocentric closest approach at 2020/08/13 05:01:19 UTC

J2000 position of star is 17:50:04.9 -29:48:30
Equinox of date position of star is 17:51:23.6 -29:48:46
Stellar brightness G=16.4, use SENSEUP=128
Star is 158 degrees from the moon. Moon is 36% illuminated.
TNO apparent brightness V=26.0

[RECON map]
TNO is 38.9 AU from the Sun and 38.3 AU from the Earth.
The TNO is moving 13.2 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 369 seconds.
The 1-sigma cross-track error in the shadow position is 2267 km.
The sky-plane scale is 27792.3 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=1148.2 km assuming a 5% albedo -- 4.6 sec chord
Diameter=468.7 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 28978, (2020/08/13 05:01UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:40.5 -26:28:34  0.9 18.08 173
34Ups Sco      17:32:10.1 -37:18:37  2.7  8.50 157
PPM 296839     17:50:30.9 -31:42:30  4.9  1.91 158
PPM 267355     17:50:47.3 -29:19:11  8.4  0.51 159
PPM 267409     17:52:43.9 -29:58:01  9.6  0.33 158
28978          17:51:24.1 -29:48:46 16.4       158
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 2.4 sigma about the mid-time.
The median site spacing is 13.7 km RECON observability=0.4 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)
Clarence Fulton 05:01:11 -14.1 AT Down 9.4 189.3 Really Low 04:46:11 - 05:16:11 11568
Kelowna 05:01:12 -14.3 AT Down 9.8 189.2 Really Low 04:46:12 - 05:16:12 11560
Peachland 05:01:12 -14.2 AT Down 9.9 188.9 Really Low 04:46:12 - 05:16:12 11558
Summerland 05:01:13 -14.4 AT Down 10.1 189.0 Really Low 04:46:13 - 05:16:13 11555
Penticton 05:01:14 -14.5 AT Down 10.1 189.1 Really Low 04:46:14 - 05:16:14 11554
Oliver 05:01:12 -14.7 AT Down 10.5 189.1 Really Low 04:46:12 - 05:16:12 11547
Anarchist Mountain Observatory 05:01:09 -14.9 AT Down 10.6 189.3 Really Low 04:46:09 - 05:16:09 11544
Tonasket 05:01:11 -15.1 AT Down 10.9 189.2 Really Low 04:46:11 - 05:16:11 11537
Okanogan 05:01:10 -15.3 AT Down 11.3 189.1 Really Low 04:46:10 - 05:16:10 11529
Victoria 05:01:31 -13.3 AT Down 11.5 185.8 Really Low 04:46:31 - 05:16:31 11525
Brewster 05:01:11 -15.4 AT Down 11.6 188.9 Really Low 04:46:11 - 05:16:11 11523
Manson/Chelan 05:01:14 -15.3 AT Down 11.8 188.6 Really Low 04:46:14 - 05:16:14 11518
Entiat 05:01:12 -15.5 AT Down 12.0 188.6 Really Low 04:46:12 - 05:16:12 11513
Wenatchee 05:01:12 -15.6 AT Down 12.3 188.5 Really Low 04:46:12 - 05:16:12 11507
Ellensburg 05:01:14 -15.8 AT Down 12.7 188.3 Really Low 04:46:14 - 05:16:14 11497
Yakima 05:01:12 -16.0 AT Down 13.1 188.3 Really Low 04:46:12 - 05:16:12 11486
Toppenish/White Swan 05:01:14 -16.3 AT Down 13.3 188.5 Really Low 04:46:14 - 05:16:14 11481
Pasco 05:01:05 -17.0 AT Down 13.3 189.6 Really Low 04:46:05 - 05:16:05 11479
PNWRO 05:01:03 -17.2 AT Down 13.5 189.8 Really Low 04:46:03 - 05:16:03 11473
Goldendale 05:01:15 -16.4 AT Down 13.9 188.1 Really Low 04:46:15 - 05:16:15 11466
The Dalles 05:01:16 -16.4 AT Down 14.2 187.8 Really Low 04:46:16 - 05:16:16 11459
Maupin 05:01:14 -16.7 AT Down 14.6 187.9 Really Low 04:46:14 - 05:16:14 11448
Redmond 05:01:15 -17.3 AT Down 15.5 187.8 Really Low 04:46:15 - 05:16:15 11422
Sisters 05:01:17 -17.1 AT Down 15.5 187.5 Really Low 04:46:17 - 05:16:17 11422
Bend 05:01:15 -17.4 AT Down 15.7 187.7 Really Low 04:46:15 - 05:16:15 11416
Oregon Observatory 05:01:16 -17.4 AT Down 15.9 187.6 Really Low 04:46:16 - 05:16:16 11410
La Pine/Gilchrist 05:01:16 -17.5 AT Down 16.1 187.6 Really Low 04:46:16 - 05:16:16 11404
North Lake 05:01:11 -18.1 Dark Down 16.5 188.1 Really Low 04:46:11 - 05:16:11 11392
Paisley 05:01:09 -18.7 Dark Down 17.0 188.5 Really Low 04:46:09 - 05:16:09 11375
Lakeview 05:01:09 -19.1 Dark Down 17.5 188.6 Really Low 04:46:09 - 05:16:09 11359
Klamath Falls 05:01:17 -18.3 Dark Down 17.6 187.4 Really Low 04:46:17 - 05:16:17 11357
Cedarville 05:01:05 -19.6 Dark Down 18.1 188.8 Really Low 04:46:05 - 05:16:05 11336
Fall River/Burney 05:01:12 -19.3 Dark Down 18.7 187.8 Really Low 04:46:12 - 05:16:12 11317
Susanville 05:01:09 -20.1 Dark Down 19.3 188.5 Really Low 04:46:09 - 05:16:09 11296
Gimple 05:01:09 -20.2 Dark Down 19.6 188.3 Really Low 04:46:09 - 05:16:09 11285
Greenville 05:01:09 -20.1 Dark Down 19.6 188.2 Really Low 04:46:09 - 05:16:09 11285
Quincy 05:01:09 -20.3 Dark Down 19.8 188.2 Really Low 04:46:09 - 05:16:09 11277
Portola 05:01:05 -20.6 Dark Down 19.8 188.6 Really Low 04:46:05 - 05:16:05 11274
Reno 05:01:02 -21.2 Dark Down 20.0 189.2 Low 04:46:02 - 05:16:02 11265
Carson City 05:01:01 -21.4 Dark Down 20.4 189.3 Low 04:46:01 - 05:16:01 11251
Yerington 05:00:56 -21.9 Dark Down 20.5 189.9 Low 04:45:56 - 05:15:56 11244
Gardnerville 05:01:00 -21.6 Dark Down 20.6 189.3 Low 04:46:00 - 05:16:00 11241
Niwot 04:59:44 -28.0 Dark Down 16.5 201.9 Really Low 04:44:44 - 05:14:44 11230
SwRI 04:59:44 -28.1 Dark Down 16.6 201.8 Really Low 04:44:44 - 05:14:44 11226
Hawthorne 05:00:54 -22.5 Dark Down 20.9 190.4 Low 04:45:54 - 05:15:54 11226
Tonopah 05:00:43 -23.6 Dark Down 21.1 191.7 Low 04:45:43 - 05:15:43 11207
Lee Vining 05:00:56 -22.6 Dark Down 21.5 190.0 Low 04:45:56 - 05:15:56 11203
Bishop 05:00:50 -23.4 Dark Down 22.0 190.7 Low 04:45:50 - 05:15:50 11178
Beatty 05:00:39 -24.7 Dark Down 22.2 192.2 Low 04:45:39 - 05:15:39 11157
Indian Springs 05:00:33 -25.5 Dark Down 22.3 193.2 Low 04:45:33 - 05:15:33 11142
Henderson 05:00:27 -26.3 Dark Down 22.7 193.8 Low 04:45:27 - 05:15:27 11116
Searchlight/Boulder City 05:00:25 -26.7 Dark Down 23.3 193.9 Low 04:45:25 - 05:15:25 11091
Patrick 05:00:19 -27.3 Dark Down 23.1 194.9 Low 04:45:19 - 05:15:19 11085
CPSLO 05:01:02 -23.4 Dark Down 24.3 188.7 Low 04:46:02 - 05:16:02 11084
Kingman/Dolan Springs 05:00:20 -27.4 Dark Down 23.4 194.7 Low 04:45:20 - 05:15:20 11076
Laughlin/Bullhead City 05:00:24 -27.1 Dark Down 23.5 194.3 Low 04:45:24 - 05:15:24 11076
DCO 05:00:14 -27.9 Dark Down 23.3 195.5 Low 04:45:14 - 05:15:14 11069
Mohave Valley 05:00:22 -27.3 Dark Down 23.7 194.3 Low 04:45:22 - 05:15:22 11063
Lake Havasu City 05:00:20 -27.7 Dark Down 24.1 194.6 Low 04:45:20 - 05:15:20 11044
Wildwood 05:00:46 -25.5 Dark Down 25.2 190.7 Low 04:45:46 - 05:15:46 11030
Parker 05:00:21 -28.0 Dark Down 24.4 194.6 Low 04:45:21 - 05:15:21 11027
Idyllwild 05:00:36 -26.9 Dark Down 25.3 192.5 Low 04:45:36 - 05:15:36 11013
Blythe 05:00:22 -28.2 Dark Down 25.0 194.4 Low 04:45:22 - 05:15:22 11002
George/Scottsdale 05:00:03 -29.7 Dark Down 24.3 196.9 Low 04:45:03 - 05:15:03 10997
Calipatria 05:00:26 -28.0 Dark Down 25.7 193.6 Low 04:45:26 - 05:15:26 10980
Yuma 05:00:18 -28.8 Dark Down 25.9 194.5 Low 04:45:18 - 05:15:18 10956

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 28978, (2020/08/13 05:01UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.08 173
34Ups Sco      17:30:45.8 -37:17:46  2.7  8.50 157
PPM 296839     17:49:10.5 -31:42:12  4.9  1.91 158
PPM 267355     17:49:28.5 -29:18:54  8.4  0.51 159
PPM 267409     17:51:24.6 -29:57:47  9.6  0.33 158
28978          17:50:04.9 -29:48:30 16.4       158
Positions are for J2000

Event circumstances last updated at 2020/06/21 05:49:40 UT

Marc W. Buie, Southwest Research Institute

RECON