RECON: TNO occultation with 556004

Event between (556004) 14HA200 and star GA0780:04969610 with event index number of 2485420

Geocentric closest approach at 2027/03/30 07:28:54 UTC

J2000 position of star is 15:55:06.9 -10:25:38
Equinox of date position of star is 15:56:27.3 -10:29:51
Stellar brightness G=12.6, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 45 degrees from the moon. Moon is 48% illuminated.
Apparent brightness V=21.3

[RECON map]
Object is 44.4 AU from the Sun and 43.8 AU from the Earth.
Apparent velocity is 14.7 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 128 seconds.
The 1-sigma cross-track error in the shadow position is 1787 km.
The sky-plane scale is 31769.0 km/arcsec.

The object has an absolute magnitude Hv=4.7
Diameter=673.0 km assuming a 5% albedo -- 47.1 sec chord
Diameter=274.8 km assuming a 30% albedo -- 19.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 556004, (2027/03/30 07:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:04.9 -26:29:24  0.9 17.94  33
1Del Oph       16:15:46.6 -03:45:44  2.7  8.25  44
50 Lib         16:02:16.1 -08:29:11  5.5  2.45  45
PPM 230996     15:58:37.8 -10:57:54  7.9  0.68  45
PPM 230913     15:55:23.1 -10:43:52  9.3  0.38  45
556004         15:56:36.4 -10:30:20 12.6        45
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 21.0 km RECON observability=0.2 and success probability=2.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:34:35 -33.9 Dark Down 17.2 134.8 Really Low 07:23:26 - 07:45:44 -1193
Kamloops 07:35:10 -35.2 Dark Down 11.0 121.9 Really Low 07:24:01 - 07:46:19 -1733
Kelowna 07:35:11 -36.1 Dark Down 12.0 122.6 Really Low 07:24:02 - 07:46:20 -1780
Peachland 07:35:11 -36.2 Dark Down 11.9 122.3 Really Low 07:24:02 - 07:46:20 -1798
Summerland 07:35:11 -36.3 Dark Down 12.0 122.3 Really Low 07:24:02 - 07:46:20 -1809
Penticton 07:35:12 -36.4 Dark Down 12.1 122.4 Really Low 07:24:03 - 07:46:21 -1812
Oliver 07:35:13 -36.8 Dark Down 12.3 122.4 Really Low 07:24:04 - 07:46:22 -1843
Anarchist Mountain Observatory 07:35:13 -37.0 Dark Down 12.5 122.5 Really Low 07:24:04 - 07:46:22 -1853
Okanogan 07:35:14 -37.6 Dark Down 12.7 122.2 Really Low 07:24:05 - 07:46:23 -1917
Brewster 07:35:15 -37.8 Dark Down 12.7 122.0 Really Low 07:24:06 - 07:46:24 -1947
Manson/Chelan 07:35:17 -38.0 Dark Down 12.6 121.6 Really Low 07:24:08 - 07:46:26 -1977
Victoria 07:35:20 -36.9 Dark Down 10.4 119.1 Really Low 07:24:11 - 07:46:29 -2010
Wenatchee 07:35:17 -38.4 Dark Down 12.8 121.4 Really Low 07:24:08 - 07:46:26 -2025
Ellensburg 07:35:19 -38.8 Dark Down 12.9 121.2 Really Low 07:24:10 - 07:46:28 -2069
Yakima 07:35:20 -39.2 Dark Down 13.1 121.1 Really Low 07:24:11 - 07:46:29 -2107
PNWRO 07:35:18 -40.0 Dark Down 14.4 122.3 Really Low 07:24:09 - 07:46:27 -2110
Toppenish/White Swan 07:35:20 -39.4 Dark Down 13.3 121.2 Really Low 07:24:11 - 07:46:29 -2122
Dunrhomin 07:34:47 -45.5 Dark Down 25.7 132.2 Low 07:23:38 - 07:45:56 -2152
Nikitin 07:34:47 -45.7 Dark Down 25.8 132.1 Low 07:23:38 - 07:45:56 -2169
CU-SBO 07:34:48 -45.8 Dark Down 25.8 132.0 Low 07:23:39 - 07:45:57 -2178
The Dalles 07:35:24 -40.1 Dark Down 13.2 120.4 Really Low 07:24:15 - 07:46:33 -2217
Maupin 07:35:23 -40.5 Dark Down 13.5 120.4 Really Low 07:24:14 - 07:46:32 -2253
Sisters 07:35:26 -41.3 Dark Down 13.6 119.8 Really Low 07:24:17 - 07:46:35 -2350
Bend 07:35:26 -41.6 Dark Down 13.9 120.0 Really Low 07:24:17 - 07:46:35 -2364
Oregon Observatory 07:35:26 -41.8 Dark Down 13.9 119.8 Really Low 07:24:17 - 07:46:35 -2385
Chiloquin 07:35:30 -43.0 Dark Down 14.3 119.2 Really Low 07:24:21 - 07:46:39 -2522
Klamath Falls 07:35:30 -43.3 Dark Down 14.5 119.2 Really Low 07:24:21 - 07:46:39 -2553
Cedarville 07:35:28 -44.2 Dark Down 15.9 120.3 Really Low 07:24:19 - 07:46:37 -2568
Fall River/Burney 07:35:32 -44.5 Dark Down 15.4 119.2 Really Low 07:24:23 - 07:46:41 -2654
Gimple 07:35:31 -45.5 Dark Down 16.2 119.4 Really Low 07:24:22 - 07:46:40 -2724
Greenville 07:35:32 -45.5 Dark Down 16.1 119.3 Really Low 07:24:23 - 07:46:41 -2726
Portola 07:35:30 -45.9 Dark Down 16.6 119.6 Really Low 07:24:21 - 07:46:39 -2742
Quincy 07:35:31 -45.7 Dark Down 16.2 119.3 Really Low 07:24:22 - 07:46:40 -2746
Reno 07:35:30 -46.2 Dark Down 17.2 120.0 Really Low 07:24:21 - 07:46:39 -2746
Yerington 07:35:29 -46.9 Dark Down 17.9 120.4 Really Low 07:24:20 - 07:46:38 -2778
Carson City 07:35:30 -46.6 Dark Down 17.4 120.0 Really Low 07:24:21 - 07:46:39 -2780
Gardnerville 07:35:30 -46.9 Dark Down 17.5 119.9 Really Low 07:24:21 - 07:46:39 -2802
Hawthorne 07:35:28 -47.4 Dark Down 18.5 120.6 Really Low 07:24:19 - 07:46:37 -2804
Lee Vining 07:35:30 -47.9 Dark Down 18.4 120.1 Really Low 07:24:21 - 07:46:39 -2876
Beatty 07:35:24 -49.2 Dark Down 20.6 121.6 Low 07:24:15 - 07:46:33 -2895
Bishop 07:35:28 -48.6 Dark Down 19.2 120.5 Really Low 07:24:19 - 07:46:37 -2909
Patrick 07:35:18 -50.9 Dark Down 23.3 123.2 Low 07:24:09 - 07:46:27 -2931
Laughlin/Bullhead City 07:35:18 -51.1 Dark Down 23.0 122.6 Low 07:24:09 - 07:46:27 -2982
George/Scottsdale 07:35:12 -52.6 Dark Down 25.6 124.1 Low 07:24:03 - 07:46:21 -3016
Lake Havasu City 07:35:19 -51.8 Dark Down 23.5 122.6 Low 07:24:10 - 07:46:28 -3037
Idyllwild 07:35:26 -52.4 Dark Down 22.2 120.5 Low 07:24:17 - 07:46:35 -3201
Calipatria 07:35:22 -53.1 Dark Down 23.4 121.2 Low 07:24:13 - 07:46:31 -3216
Yuma 07:35:20 -53.5 Dark Down 24.2 121.7 Low 07:24:11 - 07:46:29 -3224
Wildwood 07:35:31 -51.8 Dark Down 20.7 119.3 Low 07:24:22 - 07:46:40 -3236

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 556004, (2027/03/30 07:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.94  33
1Del Oph       16:14:20.7 -03:41:43  2.7  8.25  44
50 Lib         16:00:47.6 -08:24:41  5.5  2.45  45
PPM 230996     15:57:07.9 -10:53:17  7.9  0.68  45
PPM 230913     15:53:53.5 -10:39:08  9.3  0.38  45
556004         15:55:06.9 -10:25:38 12.6        45
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:27:27 UT

Marc W. Buie, Southwest Research Institute

RECON