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 09:26:19 UTC

J2000 position of star is 13:06:10.9 +24:12:23
Equinox of date position of star is 13:07:02.9 +24:06:39
Stellar brightness R=14.7, use SENSEUP=128
Star is 153 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=17.0

[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 85 seconds.
The 1-sigma cross-track error in the shadow position is 2062 km.
The sky-plane scale is 37502.5 km/arcsec.

The TNO has an absolute magnitude Hv=-0.2
Diameter=6607.2 km assuming a 5% albedo -- 262.5 sec chord
Diameter=2697.4 km assuming a 30% albedo -- 107.2 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 +19:05:02  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 13.8 km RECON observability=1.0 and success probability=11.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:27:37 -42.5 Dark Down 64.6 164.3 Up 09:20:03 - 09:35:11 3522
Tonasket 09:27:37 -42.7 Dark Down 64.8 164.2 Up 09:20:03 - 09:35:11 3501
Okanogan 09:27:36 -43.1 Dark Down 65.1 163.7 Up 09:20:02 - 09:35:10 3465
Brewster 09:27:36 -43.4 Dark Down 65.4 163.1 Up 09:20:02 - 09:35:10 3434
Manson/Chelan 09:27:36 -43.7 Dark Down 65.5 162.2 Up 09:20:02 - 09:35:10 3401
Niwot 09:26:39 -43.2 Dark Down 73.1 201.6 Up 09:19:05 - 09:34:13 3389
Entiat 09:27:37 -43.9 Dark Down 65.7 161.9 Up 09:20:03 - 09:35:11 3378
Wenatchee 09:27:36 -44.1 Dark Down 65.9 161.5 Up 09:20:02 - 09:35:10 3351
Ellensburg 09:27:35 -44.6 Dark Down 66.2 160.7 Up 09:20:01 - 09:35:09 3305
Pasco 09:27:31 -44.8 Dark Down 67.2 163.3 Up 09:19:57 - 09:35:05 3293
PNWRO 09:27:30 -44.9 Dark Down 67.5 163.6 Up 09:19:56 - 09:35:04 3279
Yakima 09:27:35 -45.0 Dark Down 66.6 160.3 Up 09:20:01 - 09:35:09 3267
Toppenish/White Swan 09:27:35 -45.1 Dark Down 66.9 160.5 Up 09:20:01 - 09:35:09 3254
George/Umatilla 09:27:30 -45.2 Dark Down 67.5 162.5 Up 09:19:56 - 09:35:04 3253
Goldendale 09:27:35 -45.7 Dark Down 67.3 159.1 Up 09:20:01 - 09:35:09 3187
The Dalles 09:27:36 -46.0 Dark Down 67.4 158.1 Up 09:20:02 - 09:35:10 3152
Maupin 09:27:34 -46.4 Dark Down 67.8 157.9 Up 09:20:00 - 09:35:08 3117
Madras/Culver 09:27:32 -46.9 Dark Down 68.3 157.3 Up 09:19:58 - 09:35:06 3065
Redmond 09:27:32 -47.2 Dark Down 68.6 156.8 Up 09:19:58 - 09:35:06 3029
Sisters 09:27:34 -47.3 Dark Down 68.5 155.9 Up 09:20:00 - 09:35:08 3016
Bend 09:27:32 -47.5 Dark Down 68.8 156.3 Up 09:19:58 - 09:35:06 3004
Oregon Observatory 09:27:32 -47.6 Dark Down 68.9 155.8 Up 09:19:58 - 09:35:06 2982
La Pine/Gilchrist 09:27:32 -47.9 Dark Down 69.1 155.4 Up 09:19:58 - 09:35:06 2961
North Lake 09:27:29 -48.0 Dark Down 69.6 156.4 Up 09:19:55 - 09:35:03 2945
Paisley 09:27:28 -48.4 Dark Down 70.2 156.7 Up 09:19:54 - 09:35:02 2908
Lakeview 09:27:26 -48.8 Dark Down 70.8 156.6 Up 09:19:52 - 09:35:00 2869
Chiloquin 09:27:31 -49.0 Dark Down 70.0 153.2 Up 09:19:57 - 09:35:05 2842
Cedarville 09:27:24 -49.3 Dark Down 71.4 156.3 Up 09:19:50 - 09:34:58 2815
Klamath Falls 09:27:29 -49.2 Dark Down 70.3 153.0 Up 09:19:55 - 09:35:03 2813
Tulelake 09:27:28 -49.4 Dark Down 70.6 153.4 Up 09:19:54 - 09:35:02 2800
Fall River/Burney 09:27:26 -50.2 Dark Down 71.5 152.4 Up 09:19:52 - 09:35:00 2718
Susanville 09:27:23 -50.4 Dark Down 72.3 153.5 Up 09:19:49 - 09:34:57 2689
Gimple 09:27:23 -50.8 Dark Down 72.4 152.5 Up 09:19:49 - 09:34:57 2654
Greenville 09:27:24 -50.8 Dark Down 72.4 152.3 Up 09:19:50 - 09:34:58 2651
Reno 09:27:20 -50.9 Dark Down 73.3 154.6 Up 09:19:46 - 09:34:54 2644
Portola 09:27:21 -50.9 Dark Down 72.9 153.1 Up 09:19:47 - 09:34:55 2641
Quincy 09:27:23 -51.0 Dark Down 72.6 152.0 Up 09:19:49 - 09:34:57 2632
Tonopah 09:27:09 -51.0 Dark Down 75.5 160.8 Up 09:19:35 - 09:34:43 2622
Yerington 09:27:16 -51.1 Dark Down 74.0 155.8 Up 09:19:42 - 09:34:50 2621
Carson City 09:27:18 -51.2 Dark Down 73.7 154.2 Up 09:19:44 - 09:34:52 2611
Hawthorne 09:27:14 -51.2 Dark Down 74.6 156.8 Up 09:19:40 - 09:34:48 2601
Gardnerville 09:27:18 -51.4 Dark Down 73.9 153.9 Up 09:19:44 - 09:34:52 2590
Indian Springs 09:27:01 -51.4 Dark Down 77.2 164.6 Up 09:19:27 - 09:34:35 2557
DCO 09:26:50 -51.2 Dark Down 79.1 174.2 Up 09:19:16 - 09:34:24 2546
Henderson 09:26:58 -51.5 Dark Down 77.9 166.9 Up 09:19:24 - 09:34:32 2542
Patrick 09:26:53 -51.4 Dark Down 78.7 171.1 Up 09:19:19 - 09:34:27 2539
Beatty 09:27:04 -51.7 Dark Down 76.7 160.9 Up 09:19:30 - 09:34:38 2536
Lee Vining 09:27:13 -51.9 Dark Down 75.0 154.3 Up 09:19:39 - 09:34:47 2526
Kingman/Dolan Springs 09:26:53 -51.6 Dark Down 78.9 170.1 Up 09:19:19 - 09:34:27 2509
Bishop 09:27:10 -52.1 Dark Down 75.8 155.7 Up 09:19:36 - 09:34:44 2503
Searchlight/Boulder City 09:26:56 -51.9 Dark Down 78.5 166.5 Up 09:19:22 - 09:34:30 2492
Laughlin/Bullhead City 09:26:54 -51.9 Dark Down 78.8 167.7 Up 09:19:20 - 09:34:28 2481
Mohave Valley 09:26:54 -52.1 Dark Down 79.1 167.4 Up 09:19:20 - 09:34:28 2457
Lone Pine 09:27:08 -52.6 Dark Down 76.6 155.6 Up 09:19:34 - 09:34:42 2447
Lake Havasu City 09:26:51 -52.3 Dark Down 79.5 168.1 Up 09:19:17 - 09:34:25 2432
Parker 09:26:50 -52.5 Dark Down 79.9 167.8 Up 09:19:16 - 09:34:24 2401
Blythe 09:26:51 -53.1 Dark Down 80.3 165.6 Up 09:19:17 - 09:34:25 2338
Yuma 09:26:49 -53.8 Dark Down 81.2 163.8 Up 09:19:15 - 09:34:23 2250
Calipatria 09:26:53 -54.0 Dark Down 80.6 159.8 Up 09:19:19 - 09:34:27 2245
Idyllwild 09:26:58 -54.2 Dark Down 79.6 155.3 Up 09:19:24 - 09:34:32 2243
CPSLO 09:27:12 -54.8 Dark Down 76.6 143.8 Up 09:19:38 - 09:34:46 2205
Wildwood 09:27:04 -54.8 Dark Down 78.6 148.1 Up 09:19:30 - 09:34:38 2186

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 +19:10:21  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 2017/12/05 19:17:26 UT

Marc W. Buie, Southwest Research Institute

RECON