RECON: TNO occultation with 136472

Event between (136472) Makemake and star UC4-572-049881 with event index number of 183955

Geocentric closest approach at 2019/03/09 09:26:25 UTC

J2000 position of star is 13:06:10.9 +24:12:23
Equinox of date position of star is 13:07:01.9 +24:06:45
Stellar brightness R=14.7, use SENSEUP=128
Star is 153 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=16.9

[RECON map]
TNO is 52.5 AU from the Sun and 51.7 AU from the Earth.
The TNO is moving 25.2 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 82 seconds.
The 1-sigma cross-track error in the shadow position is 2002 km.
The sky-plane scale is 37502.5 km/arcsec.

The TNO has an absolute magnitude Hv=-0.3
Diameter=6918.5 km assuming a 5% albedo -- 274.9 sec chord
Diameter=2824.5 km assuming a 30% albedo -- 112.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 136472, (2019/03/09 09:26UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:32.3 +19:05:03  0.0 16.89 154
Vindemiatrix   13:03:07.9 +10:51:23  2.8 13.28 166
39 Com         13:07:17.3 +21:03:03  6.0  3.05 156
PPM 102400     13:08:57.8 +24:43:45  7.9  0.75 152
PPM 102388     13:07:47.6 +24:39:58 10.0  0.58 152
PPM 102362     13:06:05.5 +24:06:07 11.4  0.23 153
136472         13:07:06.6 +24:06:14 14.7       153
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 5.0 sigma about the mid-time.
The median site spacing is 14.0 km RECON observability=1.0 and success probability=11.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:27:41 -42.5 Dark Down 64.6 164.4 Up 09:20:23 - 09:34:59 3592
Tonasket 09:27:41 -42.7 Dark Down 64.8 164.2 Up 09:20:23 - 09:34:59 3572
Okanogan 09:27:41 -43.1 Dark Down 65.1 163.7 Up 09:20:23 - 09:34:59 3536
Brewster 09:27:40 -43.4 Dark Down 65.4 163.1 Up 09:20:22 - 09:34:58 3504
Manson/Chelan 09:27:41 -43.7 Dark Down 65.5 162.2 Up 09:20:23 - 09:34:59 3471
Niwot 09:26:45 -43.2 Dark Down 73.1 201.7 Up 09:19:27 - 09:34:03 3464
Entiat 09:27:41 -43.9 Dark Down 65.7 161.9 Up 09:20:23 - 09:34:59 3448
Wenatchee 09:27:41 -44.1 Dark Down 65.9 161.5 Up 09:20:23 - 09:34:59 3421
Ellensburg 09:27:40 -44.6 Dark Down 66.2 160.7 Up 09:20:22 - 09:34:58 3375
Pasco 09:27:36 -44.8 Dark Down 67.3 163.3 Up 09:20:18 - 09:34:54 3363
PNWRO 09:27:34 -44.9 Dark Down 67.5 163.7 Up 09:20:16 - 09:34:52 3350
Yakima 09:27:41 -44.9 Dark Down 66.6 160.4 Up 09:20:23 - 09:34:59 3337
Toppenish/White Swan 09:27:39 -45.1 Dark Down 66.9 160.6 Up 09:20:21 - 09:34:57 3325
George/Umatilla 09:27:36 -45.2 Dark Down 67.5 162.6 Up 09:20:18 - 09:34:54 3324
Goldendale 09:27:39 -45.7 Dark Down 67.3 159.2 Up 09:20:21 - 09:34:57 3257
The Dalles 09:27:40 -46.0 Dark Down 67.4 158.1 Up 09:20:22 - 09:34:58 3222
Maupin 09:27:39 -46.4 Dark Down 67.8 158.0 Up 09:20:21 - 09:34:57 3187
Madras/Culver 09:27:39 -46.9 Dark Down 68.3 157.4 Up 09:20:21 - 09:34:57 3135
Redmond 09:27:37 -47.2 Dark Down 68.6 156.9 Up 09:20:19 - 09:34:55 3100
Sisters 09:27:38 -47.3 Dark Down 68.5 156.0 Up 09:20:20 - 09:34:56 3086
Bend 09:27:37 -47.4 Dark Down 68.8 156.3 Up 09:20:19 - 09:34:55 3075
Oregon Observatory 09:27:37 -47.6 Dark Down 68.9 155.8 Up 09:20:19 - 09:34:55 3053
La Pine/Gilchrist 09:27:37 -47.8 Dark Down 69.1 155.5 Up 09:20:19 - 09:34:55 3032
North Lake 09:27:34 -48.0 Dark Down 69.6 156.4 Up 09:20:16 - 09:34:52 3016
Paisley 09:27:34 -48.4 Dark Down 70.3 156.7 Up 09:20:16 - 09:34:52 2979
Lakeview 09:27:32 -48.8 Dark Down 70.8 156.7 Up 09:20:14 - 09:34:50 2940
Chiloquin 09:27:36 -49.0 Dark Down 70.0 153.3 Up 09:20:18 - 09:34:54 2913
Cedarville 09:27:30 -49.3 Dark Down 71.4 156.3 Up 09:20:12 - 09:34:48 2886
Klamath Falls 09:27:36 -49.2 Dark Down 70.3 153.1 Up 09:20:18 - 09:34:54 2884
Tulelake 09:27:33 -49.4 Dark Down 70.6 153.5 Up 09:20:15 - 09:34:51 2871
Fall River/Burney 09:27:32 -50.1 Dark Down 71.5 152.5 Up 09:20:14 - 09:34:50 2789
Susanville 09:27:28 -50.4 Dark Down 72.3 153.6 Up 09:20:10 - 09:34:46 2761
Gimple 09:27:28 -50.8 Dark Down 72.5 152.6 Up 09:20:10 - 09:34:46 2726
Greenville 09:27:29 -50.8 Dark Down 72.4 152.4 Up 09:20:11 - 09:34:47 2723
Reno 09:27:24 -50.9 Dark Down 73.3 154.7 Up 09:20:06 - 09:34:42 2716
Portola 09:27:26 -50.9 Dark Down 72.9 153.2 Up 09:20:08 - 09:34:44 2713
Quincy 09:27:28 -51.0 Dark Down 72.6 152.1 Up 09:20:10 - 09:34:46 2704
Tonopah 09:27:13 -51.0 Dark Down 75.5 160.9 Up 09:19:55 - 09:34:31 2695
Yerington 09:27:21 -51.1 Dark Down 74.0 155.9 Up 09:20:03 - 09:34:39 2693
Carson City 09:27:23 -51.2 Dark Down 73.7 154.2 Up 09:20:05 - 09:34:41 2683
Hawthorne 09:27:18 -51.2 Dark Down 74.6 156.8 Up 09:20:00 - 09:34:36 2674
Gardnerville 09:27:23 -51.3 Dark Down 73.9 154.0 Up 09:20:05 - 09:34:41 2662
Indian Springs 09:27:06 -51.4 Dark Down 77.2 164.7 Up 09:19:48 - 09:34:24 2630
DCO 09:26:55 -51.2 Dark Down 79.1 174.3 Up 09:19:37 - 09:34:13 2621
Henderson 09:27:02 -51.5 Dark Down 77.9 166.9 Up 09:19:44 - 09:34:20 2615
Patrick 09:26:57 -51.3 Dark Down 78.7 171.2 Up 09:19:39 - 09:34:15 2613
Beatty 09:27:09 -51.7 Dark Down 76.7 161.0 Up 09:19:51 - 09:34:27 2609
Lee Vining 09:27:18 -51.9 Dark Down 75.0 154.4 Up 09:20:00 - 09:34:36 2599
Kingman/Dolan Springs 09:26:57 -51.6 Dark Down 78.9 170.2 Up 09:19:39 - 09:34:15 2583
Bishop 09:27:16 -52.1 Dark Down 75.8 155.8 Up 09:19:58 - 09:34:34 2576
Searchlight/Boulder City 09:27:00 -51.9 Dark Down 78.5 166.5 Up 09:19:42 - 09:34:18 2565
Laughlin/Bullhead City 09:26:59 -51.9 Dark Down 78.8 167.8 Up 09:19:41 - 09:34:17 2555
Mohave Valley 09:26:59 -52.1 Dark Down 79.1 167.5 Up 09:19:41 - 09:34:17 2531
Lone Pine 09:27:12 -52.6 Dark Down 76.6 155.7 Up 09:19:54 - 09:34:30 2520
Lake Havasu City 09:26:57 -52.3 Dark Down 79.5 168.2 Up 09:19:39 - 09:34:15 2506
Parker 09:26:56 -52.5 Dark Down 79.9 167.9 Up 09:19:38 - 09:34:14 2475
Blythe 09:26:56 -53.1 Dark Down 80.3 165.7 Up 09:19:38 - 09:34:14 2412
Yuma 09:26:53 -53.8 Dark Down 81.2 163.9 Up 09:19:35 - 09:34:11 2325
Calipatria 09:26:56 -54.0 Dark Down 80.6 159.9 Up 09:19:38 - 09:34:14 2319
Idyllwild 09:27:02 -54.1 Dark Down 79.6 155.4 Up 09:19:44 - 09:34:20 2317
CPSLO 09:27:18 -54.8 Dark Down 76.6 143.8 Up 09:20:00 - 09:34:36 2277
Wildwood 09:27:08 -54.8 Dark Down 78.6 148.2 Up 09:19:50 - 09:34:26 2259

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 136472, (2019/03/09 09:26UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.3 +19:10:22  0.0 16.89 154
Vindemiatrix   13:02:10.3 +10:57:33  2.8 13.28 166
39 Com         13:06:21.1 +21:09:11  6.0  3.05 156
PPM 102400     13:08:02.3 +24:49:52  7.9  0.75 152
PPM 102388     13:06:52.1 +24:46:06 10.0  0.58 152
PPM 102362     13:05:09.7 +24:12:16 11.4  0.23 153
136472         13:06:10.9 +24:12:23 14.7       153
Positions are for J2000

Event circumstances last updated at 2017/08/04 18:05:02 UT

Marc W. Buie, Southwest Research Institute

RECON