RECON: TNO occultation with 28978

Event between (28978) Ixion and star GA0600:28554993 with event index number of 272379

Geocentric closest approach at 2020/06/14 09:19:12 UTC

J2000 position of star is 17:55:10.3 -29:48:36
Equinox of date position of star is 17:56:24.9 -29:48:43
Stellar brightness G=16.9, use SENSEUP=128
Star is 97 degrees from the moon. Moon is 40% illuminated.
TNO apparent brightness V=19.5

[RECON map]
TNO is 39.0 AU from the Sun and 38.0 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 231 seconds.
The 1-sigma cross-track error in the shadow position is 2509 km.
The sky-plane scale is 27540.4 km/arcsec.

The TNO has an absolute magnitude Hv=3.6
Diameter=1148.2 km assuming a 5% albedo -- 46.3 sec chord
Diameter=468.7 km assuming a 30% albedo -- 18.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 28978, (2020/06/14 09:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.9 -26:28:32  0.9 19.18 116
34Ups Sco      17:32:09.4 -37:18:37  2.7  9.04 100
Gam1Sgr        18:06:19.6 -29:34:38  4.7  2.15  94
PPM 267505     17:56:27.3 -29:48:48  8.5  0.01  96
28978          17:56:28.8 -29:48:44 16.9        96
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 3.9 sigma about the mid-time.
The median site spacing is 16.6 km RECON observability=0.3 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 09:18:15 -14.7 AT Up 9.3 192.7 Really Low 09:03:15 - 09:33:15 9223
Summerland 09:18:16 -15.0 AT Up 9.6 192.5 Really Low 09:03:16 - 09:33:16 9220
Penticton 09:18:15 -15.0 AT Up 9.6 192.6 Really Low 09:03:15 - 09:33:15 9217
Okanagan Falls 09:18:15 -15.2 AT Up 9.8 192.6 Really Low 09:03:15 - 09:33:15 9213
Oliver 09:18:15 -15.4 AT Up 10.0 192.6 Really Low 09:03:15 - 09:33:15 9208
Anarchist Mountain Observatory 09:18:14 -15.5 AT Up 10.1 192.8 Really Low 09:03:14 - 09:33:14 9202
Oroville 09:18:15 -15.6 AT Up 10.2 192.7 Really Low 09:03:15 - 09:33:15 9201
Tonasket 09:18:14 -15.8 AT Up 10.4 192.7 Really Low 09:03:14 - 09:33:14 9195
Okanogan 09:18:15 -16.2 AT Up 10.8 192.6 Really Low 09:03:15 - 09:33:15 9189
Brewster 09:18:15 -16.5 AT Up 11.1 192.5 Really Low 09:03:15 - 09:33:15 9185
Manson/Chelan 09:18:16 -16.7 AT Up 11.3 192.1 Really Low 09:03:16 - 09:33:16 9184
Entiat 09:18:16 -17.0 AT Up 11.6 192.1 Really Low 09:03:16 - 09:33:16 9179
Wenatchee 09:18:15 -17.2 AT Up 11.8 192.0 Really Low 09:03:15 - 09:33:15 9174
Ellensburg 09:18:17 -17.7 AT Up 12.3 191.8 Really Low 09:03:17 - 09:33:17 9166
Yakima 09:18:16 -18.1 Dark Up 12.7 191.8 Really Low 09:03:16 - 09:33:16 9154
Toppenish/White Swan 09:18:16 -18.2 Dark Up 12.8 192.0 Really Low 09:03:16 - 09:33:16 9146
Goldendale 09:18:17 -18.8 Dark Up 13.4 191.7 Really Low 09:03:17 - 09:33:17 9136
The Dalles 09:18:17 -19.1 Dark Up 13.7 191.3 Really Low 09:03:17 - 09:33:17 9134
Pasco 09:18:12 -18.1 Dark Up 12.8 193.1 Really Low 09:03:12 - 09:33:12 9125
Maupin 09:18:17 -19.5 Dark Up 14.1 191.5 Really Low 09:03:17 - 09:33:17 9120
George/Umatilla 09:18:12 -18.4 Dark Up 13.1 192.9 Really Low 09:03:12 - 09:33:12 9118
PNWRO 09:18:11 -18.2 Dark Up 13.0 193.3 Really Low 09:03:11 - 09:33:11 9114
Madras/Culver 09:18:17 -20.0 Dark Up 14.7 191.4 Really Low 09:03:17 - 09:33:17 9103
Sisters 09:18:18 -20.5 Dark Up 15.0 191.1 Really Low 09:03:18 - 09:33:18 9098
Redmond 09:18:16 -20.4 Dark Up 15.0 191.4 Really Low 09:03:16 - 09:33:16 9092
Bend 09:18:17 -20.6 Dark Up 15.2 191.3 Really Low 09:03:17 - 09:33:17 9087
Oregon Observatory 09:18:17 -20.8 Dark Up 15.4 191.2 Really Low 09:03:17 - 09:33:17 9083
La Pine/Gilchrist 09:18:17 -21.0 Dark Up 15.6 191.2 Really Low 09:03:17 - 09:33:17 9077
North Lake 09:18:15 -21.3 Dark Up 16.0 191.7 Really Low 09:03:15 - 09:33:15 9054
Chiloquin 09:18:18 -22.2 Dark Up 16.8 190.9 Really Low 09:03:18 - 09:33:18 9044
Klamath Falls 09:18:17 -22.5 Dark Up 17.1 191.0 Really Low 09:03:17 - 09:33:17 9031
Paisley 09:18:14 -21.7 Dark Up 16.5 192.1 Really Low 09:03:14 - 09:33:14 9030
Tulelake 09:18:16 -22.7 Dark Up 17.3 191.3 Really Low 09:03:16 - 09:33:16 9017
Lakeview 09:18:13 -22.2 Dark Up 16.9 192.3 Really Low 09:03:13 - 09:33:13 9009
Cedarville 09:18:12 -22.8 Dark Up 17.5 192.5 Really Low 09:03:12 - 09:33:12 8982
Fall River/Burney 09:18:16 -23.5 Dark Up 18.2 191.4 Really Low 09:03:16 - 09:33:16 8982
Susanville 09:18:13 -23.9 Dark Up 18.7 192.1 Really Low 09:03:13 - 09:33:13 8946
Greenville 09:18:14 -24.3 Dark Up 19.0 191.9 Really Low 09:03:14 - 09:33:14 8940
Gimple 09:18:13 -24.2 Dark Up 19.0 191.9 Really Low 09:03:13 - 09:33:13 8938
Quincy 09:18:13 -24.5 Dark Up 19.2 191.9 Really Low 09:03:13 - 09:33:13 8932
Portola 09:18:12 -24.5 Dark Up 19.3 192.3 Really Low 09:03:12 - 09:33:12 8919
Reno 09:18:09 -24.5 Dark Up 19.4 192.9 Really Low 09:03:09 - 09:33:09 8899
Carson City 09:18:09 -24.9 Dark Up 19.8 193.0 Really Low 09:03:09 - 09:33:09 8883
Gardnerville 09:18:10 -25.1 Dark Up 20.0 193.0 Really Low 09:03:10 - 09:33:10 8872
Yerington 09:18:07 -24.9 Dark Up 19.8 193.5 Really Low 09:03:07 - 09:33:07 8865
Hawthorne 09:18:05 -25.2 Dark Up 20.2 194.1 Low 09:03:05 - 09:33:05 8837
Lee Vining 09:18:06 -25.8 Dark Up 20.8 193.7 Low 09:03:06 - 09:33:06 8820
Tonopah 09:18:00 -25.2 Dark Up 20.4 195.4 Low 09:03:00 - 09:33:00 8792
Bishop 09:18:04 -26.2 Dark Up 21.3 194.4 Low 09:03:04 - 09:33:04 8781
Lone Pine 09:18:02 -26.8 Dark Up 22.0 194.7 Low 09:03:02 - 09:33:02 8740
Beatty 09:17:58 -26.1 Dark Up 21.4 195.9 Low 09:02:58 - 09:32:58 8731
CPSLO 09:18:11 -28.8 Dark Up 23.7 192.5 Low 09:03:11 - 09:33:11 8722
Indian Springs 09:17:55 -26.1 Dark Up 21.5 196.9 Low 09:02:55 - 09:32:55 8696
Henderson 09:17:52 -26.3 Dark Up 21.8 197.6 Low 09:02:52 - 09:32:52 8657
Wildwood 09:18:02 -29.3 Dark Up 24.5 194.5 Low 09:03:02 - 09:33:02 8628
Searchlight/Boulder City 09:17:51 -26.8 Dark Up 22.3 197.7 Low 09:02:51 - 09:32:51 8627
Niwot 09:17:25 -19.1 Dark Up 15.2 205.4 Really Low 09:02:25 - 09:32:25 8626
SwRI 09:17:25 -19.2 Dark Up 15.4 205.4 Really Low 09:02:25 - 09:32:25 8624
Laughlin/Bullhead City 09:17:50 -27.0 Dark Up 22.5 198.0 Low 09:02:50 - 09:32:50 8606
Patrick 09:17:48 -26.5 Dark Up 22.1 198.6 Low 09:02:48 - 09:32:48 8603
Kingman/Dolan Springs 09:17:48 -26.8 Dark Up 22.4 198.5 Low 09:02:48 - 09:32:48 8596
Mohave Valley 09:17:50 -27.2 Dark Up 22.8 198.1 Low 09:02:50 - 09:32:50 8592
Idyllwild 09:17:56 -29.0 Dark Up 24.4 196.3 Low 09:02:56 - 09:32:56 8575
DCO 09:17:45 -26.5 Dark Up 22.2 199.3 Low 09:02:45 - 09:32:45 8573
Lake Havasu City 09:17:48 -27.5 Dark Up 23.1 198.3 Low 09:02:48 - 09:32:48 8567
Parker 09:17:48 -27.8 Dark Up 23.4 198.4 Low 09:02:48 - 09:32:48 8548
Blythe 09:17:48 -28.4 Dark Up 24.0 198.2 Low 09:02:48 - 09:32:48 8527
Calipatria 09:17:52 -29.2 Dark Up 24.7 197.4 Low 09:02:52 - 09:32:52 8520
Yuma 09:17:48 -29.2 Dark Up 24.9 198.3 Low 09:02:48 - 09:32:48 8478

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, (2020/06/14 09:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.18 116
34Ups Sco      17:30:45.8 -37:17:46  2.7  9.04 100
Gam1Sgr        18:05:01.2 -29:34:48  4.7  2.15  94
PPM 267505     17:55:08.8 -29:48:41  8.5  0.01  96
28978          17:55:10.3 -29:48:36 16.9        96
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:50:52 UT

Marc W. Buie, Southwest Research Institute

RECON