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 20:28:04.3 -20:28:53
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 11:02:10 -7.0 CT Up 19.9 190.6 Really Low 10:47:10 - 11:17:10 2698
Tonasket 11:02:10 -7.2 CT Up 20.1 190.7 Low 10:47:10 - 11:17:10 2688
Okanogan 11:02:10 -7.5 CT Up 20.5 190.5 Low 10:47:10 - 11:17:10 2677
Brewster 11:02:11 -7.8 CT Up 20.7 190.3 Low 10:47:11 - 11:17:11 2670
Manson/Chelan 11:02:13 -8.1 CT Up 21.0 190.0 Low 10:47:13 - 11:17:13 2670
Entiat 11:02:13 -8.3 CT Up 21.2 189.9 Low 10:47:13 - 11:17:13 2662
Wenatchee 11:02:13 -8.6 CT Up 21.5 189.9 Low 10:47:13 - 11:17:13 2653
Ellensburg 11:02:14 -9.0 CT Up 21.9 189.7 Low 10:47:14 - 11:17:14 2640
Yakima 11:02:14 -9.3 CT Up 22.3 189.7 Low 10:47:14 - 11:17:14 2622
Toppenish/White Swan 11:02:13 -9.4 CT Up 22.5 189.9 Low 10:47:13 - 11:17:13 2608
Goldendale 11:02:15 -10.0 CT Up 23.1 189.5 Low 10:47:15 - 11:17:15 2592
The Dalles 11:02:16 -10.3 CT Up 23.4 189.1 Low 10:47:16 - 11:17:16 2591
Pasco 11:02:08 -8.9 CT Up 22.5 191.1 Low 10:47:08 - 11:17:08 2571
Maupin 11:02:15 -10.6 CT Up 23.8 189.3 Low 10:47:15 - 11:17:15 2568
George/Umatilla 11:02:09 -9.2 CT Up 22.8 190.9 Low 10:47:09 - 11:17:09 2561
PNWRO 11:02:08 -9.0 CT Up 22.7 191.4 Low 10:47:08 - 11:17:08 2554
Madras/Culver 11:02:15 -11.0 CT Up 24.3 189.3 Low 10:47:15 - 11:17:15 2543
Sisters 11:02:17 -11.5 CT Up 24.7 188.8 Low 10:47:17 - 11:17:17 2538
Redmond 11:02:16 -11.3 CT Up 24.7 189.2 Low 10:47:16 - 11:17:16 2527
Bend 11:02:16 -11.5 CT Up 24.9 189.1 Low 10:47:16 - 11:17:16 2519
Oregon Observatory 11:02:17 -11.7 CT Up 25.1 189.0 Low 10:47:17 - 11:17:17 2514
La Pine/Gilchrist 11:02:17 -11.9 CT Up 25.3 188.9 Low 10:47:17 - 11:17:17 2505
North Lake 11:02:15 -12.0 CT Up 25.7 189.6 Low 10:47:15 - 11:17:15 2468
Chiloquin 11:02:19 -12.9 AT Up 26.4 188.7 Low 10:47:19 - 11:17:19 2458
Klamath Falls 11:02:18 -13.2 AT Up 26.8 188.8 Low 10:47:18 - 11:17:18 2438
Paisley 11:02:13 -12.2 AT Up 26.2 190.0 Low 10:47:13 - 11:17:13 2431
Tulelake 11:02:17 -13.2 AT Up 27.0 189.1 Low 10:47:17 - 11:17:17 2416
Lakeview 11:02:13 -12.5 AT Up 26.6 190.2 Low 10:47:13 - 11:17:13 2400
Fall River/Burney 11:02:17 -13.9 AT Up 27.9 189.3 Low 10:47:17 - 11:17:17 2366
Cedarville 11:02:12 -12.9 AT Up 27.2 190.5 Low 10:47:12 - 11:17:12 2360
Susanville 11:02:15 -14.0 AT Up 28.4 190.1 Low 10:47:15 - 11:17:15 2312
Greenville 11:02:16 -14.3 AT Up 28.7 189.8 Low 10:47:16 - 11:17:16 2304
Gimple 11:02:15 -14.3 AT Up 28.7 189.9 Low 10:47:15 - 11:17:15 2302
Quincy 11:02:16 -14.5 AT Up 28.9 189.8 Low 10:47:16 - 11:17:16 2293
Portola 11:02:14 -14.3 AT Up 29.0 190.3 Low 10:47:14 - 11:17:14 2273
Reno 11:02:11 -14.2 AT Up 29.1 191.1 Low 10:47:11 - 11:17:11 2240
Carson City 11:02:11 -14.5 AT Up 29.5 191.1 Low 10:47:11 - 11:17:11 2219
Gardnerville 11:02:10 -14.6 AT Up 29.7 191.2 Low 10:47:10 - 11:17:10 2204
Yerington 11:02:09 -14.3 AT Up 29.6 191.8 Low 10:47:09 - 11:17:09 2191
Hawthorne 11:02:06 -14.3 AT Up 30.0 192.4 Low 10:47:06 - 11:17:06 2149
Lee Vining 11:02:09 -15.0 AT Up 30.6 192.0 Up 10:47:09 - 11:17:09 2129
Tonopah 11:02:01 -13.9 AT Up 30.2 194.0 Up 10:47:01 - 11:17:01 2081
Bishop 11:02:06 -15.1 AT Up 31.1 192.8 Up 10:47:06 - 11:17:06 2072
Lone Pine 11:02:05 -15.4 AT Up 31.7 193.3 Up 10:47:05 - 11:17:05 2016
CPSLO 11:02:16 -17.8 AT Up 33.4 190.6 Up 10:47:16 - 11:17:16 2009
Beatty 11:01:59 -14.5 AT Up 31.2 194.6 Up 10:46:59 - 11:16:59 1997
Indian Springs 11:01:55 -14.1 AT Up 31.3 195.8 Up 10:46:55 - 11:16:55 1944
Henderson 11:01:53 -14.1 AT Up 31.7 196.6 Up 10:46:53 - 11:16:53 1889
Wildwood 11:02:08 -17.5 AT Up 34.3 193.1 Up 10:47:08 - 11:17:08 1871
Searchlight/Boulder City 11:01:52 -14.5 AT Up 32.2 196.8 Up 10:46:52 - 11:16:52 1850
Niwot 11:01:18 -5.7 CT Up 25.1 205.6 Low 10:46:18 - 11:16:18 1840
Laughlin/Bullhead City 11:01:51 -14.5 AT Up 32.4 197.2 Up 10:46:51 - 11:16:51 1820
Patrick 11:01:48 -13.9 AT Up 32.0 197.9 Up 10:46:48 - 11:16:48 1814
Kingman/Dolan Springs 11:01:49 -14.1 AT Up 32.2 197.7 Up 10:46:49 - 11:16:49 1806
Mohave Valley 11:01:51 -14.6 AT Up 32.6 197.3 Up 10:46:51 - 11:16:51 1802
Idyllwild 11:02:00 -16.7 AT Up 34.3 195.2 Up 10:47:00 - 11:17:00 1791
DCO 11:01:46 -13.7 AT Up 32.1 198.7 Up 10:46:46 - 11:16:46 1772
Lake Havasu City 11:01:50 -14.8 AT Up 33.0 197.6 Up 10:46:50 - 11:16:50 1768
Parker 11:01:49 -15.0 AT Up 33.3 197.7 Up 10:46:49 - 11:16:49 1743
Blythe 11:01:51 -15.5 AT Up 33.9 197.5 Up 10:46:51 - 11:16:51 1717
Calipatria 11:01:55 -16.4 AT Up 34.6 196.6 Up 10:46:55 - 11:16:55 1713
Yuma 11:01:51 -16.2 AT Up 34.8 197.6 Up 10:46:51 - 11:16:51 1655

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 2017/12/06 19:04:06 UT

Marc W. Buie, Southwest Research Institute

RECON