RECON: TNO occultation with 09YG19

Event between 09YG19 and star GA1120:02249448 with event index number of 2659302

Geocentric closest approach at 2028/12/31 11:00:39 UTC

J2000 position of star is 06:33:50.7 +23:05:05
Equinox of date position of star is 06:35:14.9 +23:03:56
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 1 degrees from the moon. Moon is 100% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 38.0 AU from the Sun and 37.0 AU from the Earth.
Apparent velocity is 24.9 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 235 seconds.
The 1-sigma cross-track error in the shadow position is 1748 km.
The sky-plane scale is 26857.7 km/arcsec.

The object has an absolute magnitude Hv=6.1
Diameter=356.5 km assuming a 5% albedo -- 14.3 sec chord
Diameter=145.5 km assuming a 30% albedo -- 5.8 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 09YG19, (2028/12/31 11:00UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:05.5 +27:57:13  1.1 16.84  17
Alhena         06:39:23.2 +16:22:19  1.9  6.75   8
PPM 096308     06:40:49.9 +22:00:10  6.0  1.61   2
PPM 096248     06:38:27.8 +23:04:17  6.8  0.66   1
PPM 096198     06:36:21.7 +23:10:33  9.3  0.21   1
PPM 096176     06:35:47.0 +23:01:28 10.5  0.05   1
09YG19         06:35:36.2 +23:03:38 15.6         1
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 3.8 sigma about the mid-time.
The median site spacing is 21.2 km RECON observability=1.0 and success probability=22.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:58:36 -37.5 Dark Up 35.9 261.9 Up 10:43:36 - 11:13:36 -958
Kamloops 10:58:54 -46.5 Dark Up 44.9 249.9 Up 10:43:54 - 11:13:54 -1429
Kelowna 10:58:51 -46.3 Dark Up 44.7 251.5 Up 10:43:51 - 11:13:51 -1475
Peachland 10:58:51 -46.5 Dark Up 44.9 251.4 Up 10:43:51 - 11:13:51 -1492
Summerland 10:58:50 -46.5 Dark Up 44.9 251.6 Up 10:43:50 - 11:13:50 -1502
Penticton 10:58:50 -46.5 Dark Up 44.8 251.8 Up 10:43:50 - 11:13:50 -1505
Oliver 10:58:49 -46.6 Dark Up 44.9 252.1 Up 10:43:49 - 11:13:49 -1534
Anarchist Mountain Observatory 10:58:48 -46.5 Dark Up 44.9 252.4 Up 10:43:48 - 11:13:48 -1544
Okanogan 10:58:47 -46.9 Dark Up 45.2 252.8 Up 10:43:47 - 11:13:47 -1605
Brewster 10:58:46 -47.1 Dark Up 45.4 252.9 Up 10:43:46 - 11:13:46 -1633
Manson/Chelan 10:58:47 -47.4 Dark Up 45.7 252.8 Up 10:43:47 - 11:13:47 -1660
Victoria 10:58:55 -49.2 Dark Up 47.5 249.0 Up 10:43:55 - 11:13:55 -1685
Wenatchee 10:58:46 -47.7 Dark Up 46.0 253.1 Up 10:43:46 - 11:13:46 -1705
Ellensburg 10:58:45 -48.0 Dark Up 46.2 253.3 Up 10:43:45 - 11:13:45 -1747
Yakima 10:58:44 -48.1 Dark Up 46.3 253.6 Up 10:43:44 - 11:13:44 -1783
PNWRO 10:58:39 -47.2 Dark Up 45.4 255.7 Up 10:43:39 - 11:13:39 -1791
Toppenish/White Swan 10:58:43 -48.1 Dark Up 46.3 254.0 Up 10:43:43 - 11:13:43 -1798
The Dalles 10:58:43 -48.8 Dark Up 47.0 254.1 Up 10:43:43 - 11:13:43 -1887
Dunrhomin 10:57:59 -38.3 Dark Up 36.2 271.0 Up 10:42:59 - 11:12:59 -1889
Nikitin 10:57:59 -38.3 Dark Up 36.2 271.1 Up 10:42:59 - 11:12:59 -1906
CU-SBO 10:57:58 -38.4 Dark Up 36.3 271.1 Up 10:42:58 - 11:12:58 -1914
Maupin 10:58:42 -48.9 Dark Up 47.1 254.6 Up 10:43:42 - 11:13:42 -1921
Sisters 10:58:41 -49.5 Dark Up 47.7 255.1 Up 10:43:41 - 11:13:41 -2013
Bend 10:58:39 -49.4 Dark Up 47.5 255.6 Up 10:43:39 - 11:13:39 -2028
Oregon Observatory 10:58:39 -49.5 Dark Up 47.7 255.6 Up 10:43:39 - 11:13:39 -2047
Chiloquin 10:58:37 -50.2 Dark Up 48.3 256.7 Up 10:43:37 - 11:13:37 -2178
Klamath Falls 10:58:36 -50.3 Dark Up 48.3 257.1 Up 10:43:36 - 11:13:36 -2208
Cedarville 10:58:31 -49.3 Dark Up 47.3 259.2 Up 10:43:31 - 11:13:31 -2228
Fall River/Burney 10:58:32 -50.3 Dark Up 48.3 258.7 Up 10:43:32 - 11:13:32 -2307
Gimple 10:58:29 -50.1 Dark Up 48.1 260.1 Up 10:43:29 - 11:13:29 -2377
Greenville 10:58:29 -50.2 Dark Up 48.1 260.1 Up 10:43:29 - 11:13:29 -2379
Portola 10:58:28 -49.9 Dark Up 47.8 260.8 Up 10:43:28 - 11:13:28 -2396
Quincy 10:58:29 -50.2 Dark Up 48.2 260.3 Up 10:43:29 - 11:13:29 -2398
Reno 10:58:25 -49.4 Dark Up 47.4 261.6 Up 10:43:25 - 11:13:25 -2402
Yerington 10:58:23 -49.0 Dark Up 47.0 262.7 Up 10:43:23 - 11:13:23 -2435
Carson City 10:58:25 -49.5 Dark Up 47.4 262.0 Up 10:43:25 - 11:13:25 -2435
Gardnerville 10:58:24 -49.5 Dark Up 47.4 262.3 Up 10:43:24 - 11:13:24 -2457
Hawthorne 10:58:21 -48.7 Dark Up 46.6 263.5 Up 10:43:21 - 11:13:21 -2463
Lee Vining 10:58:20 -49.2 Dark Up 47.1 263.8 Up 10:43:20 - 11:13:20 -2531
Beatty 10:58:12 -47.5 Dark Up 45.3 266.5 Up 10:43:12 - 11:13:12 -2560
Bishop 10:58:17 -48.7 Dark Up 46.6 264.9 Up 10:43:17 - 11:13:17 -2566
Patrick 10:58:02 -45.3 Dark Up 43.1 269.7 Up 10:43:02 - 11:13:02 -2610
Laughlin/Bullhead City 10:58:04 -45.9 Dark Up 43.6 269.5 Up 10:43:04 - 11:13:04 -2656
George/Scottsdale 10:57:55 -43.7 Dark Up 41.4 272.3 Up 10:42:55 - 11:12:55 -2705
Lake Havasu City 10:58:02 -45.7 Dark Up 43.4 270.3 Up 10:43:02 - 11:13:02 -2712
Idyllwild 10:58:05 -47.7 Dark Up 45.4 269.7 Up 10:43:05 - 11:13:05 -2862
Calipatria 10:58:01 -46.7 Dark Up 44.4 270.9 Up 10:43:01 - 11:13:01 -2883
Wildwood 10:58:11 -49.2 Dark Up 47.0 268.2 Up 10:43:11 - 11:13:11 -2887
Yuma 10:57:58 -46.0 Dark Up 43.7 271.8 Up 10:42:58 - 11:12:58 -2895

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 09YG19, (2028/12/31 11:00UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 16.84  17
Alhena         06:37:42.8 +16:23:56  1.9  6.75   8
PPM 096308     06:39:05.3 +22:01:51  6.0  1.61   2
PPM 096248     06:36:42.3 +23:05:52  6.8  0.66   1
PPM 096198     06:34:36.1 +23:12:03  9.3  0.21   1
PPM 096176     06:34:01.5 +23:02:57 10.5  0.05   1
09YG19         06:33:50.7 +23:05:05 15.6         1
Positions are for J2000

Event circumstances last updated at 2023/02/14 03:57:40 UT

Marc W. Buie, Southwest Research Institute

RECON