RECON: TNO occultation with 28978

Event between (28978) Ixion and star GA0600:27583288 with event index number of 187755

Geocentric closest approach at 2019/04/30 11:29:09 UTC

J2000 position of star is 17:52:34.8 -29:13:08
Equinox of date position of star is 17:53:45.3 -29:13:19
Stellar brightness G=11.7, use SENSEUP=8
Star is 80 degrees from the moon. Moon is 19% illuminated.
TNO apparent brightness V=19.6

[RECON map]
TNO is 39.3 AU from the Sun and 38.6 AU from the Earth.
The TNO is moving 15.2 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 309 seconds.
The 1-sigma cross-track error in the shadow position is 2143 km.
The sky-plane scale is 27986.9 km/arcsec.

The TNO has an absolute magnitude Hv=3.6
Diameter=1148.2 km assuming a 5% albedo -- 75.6 sec chord
Diameter=468.7 km assuming a 30% albedo -- 30.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 28978, (2019/04/30 11:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.7 -26:28:24  0.9 18.57  98
34Ups Sco      17:32:04.8 -37:18:34  2.7  9.27  84
3 Sgr          17:48:46.7 -27:50:11  4.2  1.77  81
PPM 267355     17:50:42.4 -29:19:10  8.4  0.68  80
PPM 267444     17:53:37.3 -29:05:59  9.2  0.13  80
28978          17:53:48.7 -29:13:19 11.7        79
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 2.9 sigma about the mid-time.
The median site spacing is 13.3 km RECON observability=0.5 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)
Penticton 11:18:37 -11.7 CT Down 11.2 180.1 Really Low 11:03:37 - 11:33:37 7769
Oroville 11:18:37 -12.0 AT Down 11.8 180.2 Really Low 11:03:37 - 11:33:37 7754
Tonasket 11:18:36 -12.2 AT Down 12.1 180.2 Really Low 11:03:36 - 11:33:36 7749
Okanogan 11:18:37 -12.5 AT Down 12.4 180.0 Really Low 11:03:37 - 11:33:37 7744
Manson/Chelan 11:18:41 -13.1 AT Down 12.9 179.5 Really Low 11:03:41 - 11:33:41 7742
Brewster 11:18:39 -12.7 AT Down 12.7 179.9 Really Low 11:03:39 - 11:33:39 7741
Entiat 11:18:41 -13.2 AT Down 13.1 179.5 Really Low 11:03:41 - 11:33:41 7738
Wenatchee 11:18:42 -13.5 AT Down 13.4 179.4 Really Low 11:03:42 - 11:33:42 7733
Ellensburg 11:18:41 -13.8 AT Down 13.8 179.2 Really Low 11:03:41 - 11:33:41 7727
Yakima 11:18:43 -14.1 AT Down 14.2 179.2 Really Low 11:03:43 - 11:33:43 7717
Toppenish/White Swan 11:18:42 -14.2 AT Down 14.4 179.3 Really Low 11:03:42 - 11:33:42 7708
The Dalles 11:18:46 -15.1 AT Down 15.2 178.6 Really Low 11:03:46 - 11:33:46 7700
Goldendale 11:18:44 -14.7 AT Down 15.0 178.9 Really Low 11:03:44 - 11:33:44 7700
Maupin 11:18:47 -15.3 AT Down 15.6 178.7 Really Low 11:03:47 - 11:33:47 7687
Pasco 11:18:36 -13.6 AT Down 14.5 180.4 Really Low 11:03:36 - 11:33:36 7682
George/Umatilla 11:18:36 -13.9 AT Down 14.9 180.3 Really Low 11:03:36 - 11:33:36 7677
Madras/Culver 11:18:47 -15.7 AT Down 16.1 178.7 Really Low 11:03:47 - 11:33:47 7672
PNWRO 11:18:35 -13.6 AT Down 14.8 180.7 Really Low 11:03:35 - 11:33:35 7671
Sisters 11:18:49 -16.1 AT Down 16.5 178.3 Really Low 11:03:49 - 11:33:49 7670
Redmond 11:18:47 -15.9 AT Down 16.5 178.6 Really Low 11:03:47 - 11:33:47 7662
Bend 11:18:47 -16.1 AT Down 16.7 178.5 Really Low 11:03:47 - 11:33:47 7658
Oregon Observatory 11:18:49 -16.3 AT Down 16.9 178.4 Really Low 11:03:49 - 11:33:49 7655
La Pine/Gilchrist 11:18:48 -16.5 AT Down 17.1 178.3 Really Low 11:03:48 - 11:33:48 7650
North Lake 11:18:46 -16.4 AT Down 17.5 178.9 Really Low 11:03:46 - 11:33:46 7625
Chiloquin 11:18:51 -17.4 AT Down 18.2 178.0 Really Low 11:03:51 - 11:33:51 7620
Klamath Falls 11:18:51 -17.6 AT Down 18.5 178.1 Really Low 11:03:51 - 11:33:51 7607
Paisley 11:18:45 -16.6 AT Down 18.1 179.2 Really Low 11:03:45 - 11:33:45 7601
Tulelake 11:18:51 -17.6 AT Down 18.8 178.3 Really Low 11:03:51 - 11:33:51 7593
Lakeview 11:18:45 -16.8 AT Down 18.6 179.4 Really Low 11:03:45 - 11:33:45 7580
Fall River/Burney 11:18:50 -18.1 Dark Down 19.7 178.4 Really Low 11:03:50 - 11:33:50 7559
Cedarville 11:18:44 -17.1 AT Down 19.3 179.5 Really Low 11:03:44 - 11:33:44 7554
Susanville 11:18:47 -18.1 Dark Down 20.4 179.1 Low 11:03:47 - 11:33:47 7523
Greenville 11:18:48 -18.5 Dark Down 20.6 178.8 Low 11:03:48 - 11:33:48 7518
Gimple 11:18:49 -18.4 Dark Down 20.6 178.9 Low 11:03:49 - 11:33:49 7516
Quincy 11:18:49 -18.6 Dark Down 20.8 178.8 Low 11:03:49 - 11:33:49 7510
Portola 11:18:47 -18.4 Dark Down 21.0 179.3 Low 11:03:47 - 11:33:47 7496
Reno 11:18:44 -18.2 Dark Down 21.2 179.8 Low 11:03:44 - 11:33:44 7473
Carson City 11:18:43 -18.4 Dark Down 21.6 179.9 Low 11:03:43 - 11:33:43 7459
Gardnerville 11:18:44 -18.5 Dark Up 21.8 179.9 Low 11:03:44 - 11:33:44 7448
Yerington 11:18:40 -18.1 Dark Up 21.8 180.5 Low 11:03:40 - 11:33:40 7438
Hawthorne 11:18:37 -18.1 Dark Up 22.2 180.9 Low 11:03:37 - 11:33:37 7409
Lee Vining 11:18:41 -18.7 Dark Up 22.8 180.5 Low 11:03:41 - 11:33:41 7395
Tonopah 11:18:30 -17.5 AT Up 22.7 182.3 Low 11:03:30 - 11:33:30 7359
Bishop 11:18:37 -18.6 Dark Up 23.4 181.2 Low 11:03:37 - 11:33:37 7355
Lone Pine 11:18:36 -18.9 Dark Up 24.2 181.5 Low 11:03:36 - 11:33:36 7314
CPSLO 11:18:50 -21.3 Dark Up 25.5 179.0 Low 11:03:50 - 11:33:50 7310
Beatty 11:18:29 -17.8 AT Up 23.8 182.7 Low 11:03:29 - 11:33:29 7299
Indian Springs 11:18:21 -17.3 AT Up 24.1 183.7 Low 11:03:21 - 11:33:21 7259
Henderson 11:18:19 -17.2 AT Up 24.6 184.4 Low 11:03:19 - 11:33:19 7218
Wildwood 11:18:41 -20.7 Dark Up 26.7 181.0 Low 11:03:41 - 11:33:41 7209
Searchlight/Boulder City 11:18:19 -17.5 AT Up 25.2 184.5 Low 11:03:19 - 11:33:19 7190
Laughlin/Bullhead City 11:18:17 -17.4 AT Up 25.4 184.8 Low 11:03:17 - 11:33:17 7167
Patrick 11:18:14 -16.8 AT Up 25.1 185.5 Low 11:03:14 - 11:33:14 7162
Kingman/Dolan Springs 11:18:14 -17.0 AT Up 25.4 185.3 Low 11:03:14 - 11:33:14 7156
Mohave Valley 11:18:18 -17.5 AT Up 25.7 184.8 Low 11:03:18 - 11:33:18 7154
Idyllwild 11:18:30 -19.6 Dark Up 27.0 182.8 Low 11:03:30 - 11:33:30 7149
Niwot 11:17:27 -8.6 CT Up 19.4 193.1 Really Low 11:02:27 - 11:32:27 7140
DCO 11:18:10 -16.5 AT Up 25.4 186.1 Low 11:03:10 - 11:33:10 7129
Lake Havasu City 11:18:17 -17.6 AT Up 26.1 185.1 Low 11:03:17 - 11:33:17 7128
Parker 11:18:17 -17.8 AT Up 26.4 185.1 Low 11:03:17 - 11:33:17 7110
Blythe 11:18:18 -18.2 Dark Up 27.0 184.9 Low 11:03:18 - 11:33:18 7091
Calipatria 11:18:23 -19.2 Dark Up 27.5 184.0 Low 11:03:23 - 11:33:23 7089
Yuma 11:18:18 -18.8 Dark Up 27.9 184.9 Low 11:03:18 - 11:33:18 7045

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, (2019/04/30 11:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.57  98
34Ups Sco      17:30:45.8 -37:17:46  2.7  9.27  84
3 Sgr          17:47:33.6 -27:49:51  4.2  1.77  81
PPM 267355     17:49:28.5 -29:18:54  8.4  0.68  80
PPM 267444     17:52:23.6 -29:05:47  9.2  0.13  80
28978          17:52:34.8 -29:13:08 11.7        80
Positions are for J2000

Event circumstances last updated at 2018/06/11 23:03:57 UT

Marc W. Buie, Southwest Research Institute

RECON