RECON: TNO occultation with 04MT8

Event between 04MT8 and star UC4-348-189060 with event index number of 195290

Geocentric closest approach at 2019/06/23 11:04:02 UTC

J2000 position of star is 20:27:02.0 -20:32:29
Equinox of date position of star is 20:28:02.8 -20:28:59
Stellar brightness R=16.5, use SENSEUP=128
Star is 36 degrees from the moon. Moon is 68% illuminated.
TNO apparent brightness V=23.2

[RECON map]
TNO is 44.9 AU from the Sun and 44.1 AU from the Earth.
The TNO is moving 20.3 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 800 seconds.
The 1-sigma cross-track error in the shadow position is 3571 km.
The sky-plane scale is 31957.8 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=291.1 km assuming a 5% albedo -- 14.4 sec chord
Diameter=118.8 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04MT8, (2019/06/23 11:04UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:43.3 -29:31:07  1.2 35.13  18
38Zet Sgr      19:03:50.9 -29:51:02  2.7 21.21  57
7Sig Cap       20:20:30.9 -19:03:23  5.3  2.29  38
PPM 271194     20:30:08.2 -20:50:09  7.5  0.59  36
PPM 271145     20:27:59.7 -20:44:50  8.7  0.27  36
04MT8          20:28:09.7 -20:28:35 16.5        36
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 1.1 sigma about the mid-time.
The median site spacing is 57.8 km RECON observability=0.1 and success probability=3.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 11:02:09 -7.0 CT Up 19.9 190.6 Really Low 10:47:09 - 11:17:09 2692
Tonasket 11:02:09 -7.2 CT Up 20.1 190.6 Low 10:47:09 - 11:17:09 2682
Okanogan 11:02:09 -7.5 CT Up 20.5 190.5 Low 10:47:09 - 11:17:09 2671
Brewster 11:02:11 -7.8 CT Up 20.7 190.3 Low 10:47:11 - 11:17:11 2664
Manson/Chelan 11:02:12 -8.1 CT Up 21.0 190.0 Low 10:47:12 - 11:17:12 2663
Entiat 11:02:13 -8.3 CT Up 21.2 189.9 Low 10:47:13 - 11:17:13 2655
Wenatchee 11:02:13 -8.6 CT Up 21.5 189.9 Low 10:47:13 - 11:17:13 2646
Ellensburg 11:02:13 -9.0 CT Up 21.9 189.7 Low 10:47:13 - 11:17:13 2633
Yakima 11:02:13 -9.3 CT Up 22.3 189.7 Low 10:47:13 - 11:17:13 2615
Toppenish/White Swan 11:02:13 -9.4 CT Up 22.5 189.9 Low 10:47:13 - 11:17:13 2601
Goldendale 11:02:14 -10.0 CT Up 23.1 189.5 Low 10:47:14 - 11:17:14 2586
The Dalles 11:02:15 -10.3 CT Up 23.4 189.1 Low 10:47:15 - 11:17:15 2584
Pasco 11:02:09 -8.9 CT Up 22.5 191.1 Low 10:47:09 - 11:17:09 2564
Maupin 11:02:15 -10.6 CT Up 23.8 189.3 Low 10:47:15 - 11:17:15 2562
George/Umatilla 11:02:09 -9.2 CT Up 22.8 190.9 Low 10:47:09 - 11:17:09 2554
PNWRO 11:02:06 -9.0 CT Up 22.7 191.4 Low 10:47:06 - 11:17:06 2547
Madras/Culver 11:02:15 -11.0 CT Up 24.3 189.3 Low 10:47:15 - 11:17:15 2536
Sisters 11:02:16 -11.5 CT Up 24.7 188.8 Low 10:47:16 - 11:17:16 2532
Redmond 11:02:15 -11.3 CT Up 24.7 189.2 Low 10:47:15 - 11:17:15 2521
Bend 11:02:16 -11.5 CT Up 24.9 189.1 Low 10:47:16 - 11:17:16 2514
Oregon Observatory 11:02:16 -11.7 CT Up 25.1 189.0 Low 10:47:16 - 11:17:16 2508
La Pine/Gilchrist 11:02:15 -11.9 CT Up 25.3 188.9 Low 10:47:15 - 11:17:15 2500
North Lake 11:02:14 -12.0 CT Up 25.7 189.6 Low 10:47:14 - 11:17:14 2463
Chiloquin 11:02:17 -12.9 AT Up 26.4 188.7 Low 10:47:17 - 11:17:17 2452
Klamath Falls 11:02:17 -13.2 AT Up 26.8 188.8 Low 10:47:17 - 11:17:17 2432
Paisley 11:02:13 -12.2 AT Up 26.2 190.0 Low 10:47:13 - 11:17:13 2425
Tulelake 11:02:16 -13.2 AT Up 27.0 189.1 Low 10:47:16 - 11:17:16 2410
Lakeview 11:02:12 -12.5 AT Up 26.6 190.2 Low 10:47:12 - 11:17:12 2394
Fall River/Burney 11:02:15 -13.9 AT Up 27.9 189.3 Low 10:47:15 - 11:17:15 2359
Cedarville 11:02:12 -12.9 AT Up 27.2 190.5 Low 10:47:12 - 11:17:12 2354
Susanville 11:02:14 -14.0 AT Up 28.4 190.1 Low 10:47:14 - 11:17:14 2305
Greenville 11:02:15 -14.3 AT Up 28.7 189.8 Low 10:47:15 - 11:17:15 2298
Gimple 11:02:14 -14.3 AT Up 28.7 189.9 Low 10:47:14 - 11:17:14 2295
Quincy 11:02:15 -14.5 AT Up 28.9 189.8 Low 10:47:15 - 11:17:15 2286
Portola 11:02:13 -14.3 AT Up 29.0 190.3 Low 10:47:13 - 11:17:13 2267
Reno 11:02:11 -14.2 AT Up 29.1 191.1 Low 10:47:11 - 11:17:11 2234
Carson City 11:02:10 -14.5 AT Up 29.5 191.1 Low 10:47:10 - 11:17:10 2213
Gardnerville 11:02:10 -14.6 AT Up 29.7 191.2 Low 10:47:10 - 11:17:10 2197
Yerington 11:02:08 -14.3 AT Up 29.6 191.8 Low 10:47:08 - 11:17:08 2184
Hawthorne 11:02:06 -14.3 AT Up 30.0 192.4 Low 10:47:06 - 11:17:06 2142
Lee Vining 11:02:08 -15.0 AT Up 30.6 192.0 Up 10:47:08 - 11:17:08 2122
Tonopah 11:01:59 -13.9 AT Up 30.2 193.9 Up 10:46:59 - 11:16:59 2074
Bishop 11:02:05 -15.1 AT Up 31.1 192.8 Up 10:47:05 - 11:17:05 2065
Lone Pine 11:02:04 -15.4 AT Up 31.7 193.3 Up 10:47:04 - 11:17:04 2008
CPSLO 11:02:15 -17.8 AT Up 33.4 190.6 Up 10:47:15 - 11:17:15 2001
Beatty 11:01:58 -14.5 AT Up 31.2 194.6 Up 10:46:58 - 11:16:58 1989
Indian Springs 11:01:54 -14.1 AT Up 31.3 195.8 Up 10:46:54 - 11:16:54 1936
Henderson 11:01:51 -14.1 AT Up 31.7 196.6 Up 10:46:51 - 11:16:51 1881
Wildwood 11:02:07 -17.5 AT Up 34.3 193.1 Up 10:47:07 - 11:17:07 1863
Searchlight/Boulder City 11:01:51 -14.5 AT Up 32.2 196.8 Up 10:46:51 - 11:16:51 1842
Niwot 11:01:16 -5.7 CT Up 25.1 205.6 Low 10:46:16 - 11:16:16 1833
Laughlin/Bullhead City 11:01:50 -14.5 AT Up 32.4 197.2 Up 10:46:50 - 11:16:50 1812
Patrick 11:01:47 -13.9 AT Up 32.0 197.9 Up 10:46:47 - 11:16:47 1806
Kingman/Dolan Springs 11:01:48 -14.1 AT Up 32.2 197.7 Up 10:46:48 - 11:16:48 1798
Mohave Valley 11:01:50 -14.6 AT Up 32.7 197.2 Up 10:46:50 - 11:16:50 1794
Idyllwild 11:01:59 -16.7 AT Up 34.3 195.2 Up 10:46:59 - 11:16:59 1783
DCO 11:01:44 -13.7 AT Up 32.1 198.7 Up 10:46:44 - 11:16:44 1764
Lake Havasu City 11:01:49 -14.8 AT Up 33.0 197.6 Up 10:46:49 - 11:16:49 1759
Parker 11:01:48 -15.0 AT Up 33.3 197.7 Up 10:46:48 - 11:16:48 1735
Blythe 11:01:50 -15.5 AT Up 33.9 197.5 Up 10:46:50 - 11:16:50 1709
Calipatria 11:01:54 -16.4 AT Up 34.6 196.6 Up 10:46:54 - 11:16:54 1704
Yuma 11:01:50 -16.2 AT Up 34.8 197.6 Up 10:46:50 - 11:16:50 1647

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 04MT8, (2019/06/23 11:04UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 35.13  18
38Zet Sgr      19:02:36.7 -29:52:49  2.7 21.21  57
7Sig Cap       20:19:23.6 -19:07:07  5.3  2.29  38
PPM 271194     20:29:00.4 -20:54:06  7.5  0.59  36
PPM 271145     20:26:51.9 -20:48:44  8.7  0.27  36
04MT8          20:27:02.0 -20:32:29 16.5        36
Positions are for J2000

Event circumstances last updated at 2017/07/01 17:47:51 UT

Marc W. Buie, Southwest Research Institute

RECON