RECON: TNO occultation with 556130

Event between (556130) 14KV101 and star GA0840:05162129 with event index number of 2502059

Geocentric closest approach at 2025/02/18 11:42:16 UTC

J2000 position of star is 16:45:26.5 -05:28:21
Equinox of date position of star is 16:46:41.3 -05:30:49
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 40 degrees from the moon. Moon is 71% illuminated.
Apparent brightness V=22.4

[RECON map]
Object is 30.7 AU from the Sun and 30.9 AU from the Earth.
Apparent velocity is 14.6 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 152 seconds.
The 1-sigma cross-track error in the shadow position is 1662 km.
The sky-plane scale is 22386.5 km/arcsec.

The object has an absolute magnitude Hv=7.3
Diameter=205.1 km assuming a 5% albedo -- 14.1 sec chord
Diameter=83.7 km assuming a 30% albedo -- 5.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 556130, (2025/02/18 11:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:57.2 -26:29:08  0.9 21.31  34
13Zet Oph      16:38:32.7 -10:36:58  2.6  5.49  36
PPM 199844     16:39:22.5 -06:35:12  6.4  2.13  38
PPM 200032     16:50:11.3 -04:33:31  7.6  1.28  41
PPM 199954     16:46:12.0 -05:21:02  9.2  0.22  40
556130         16:46:46.8 -05:31:00 16.5        40
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 13.2 km RECON observability=1.0 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)
Kamloops 11:41:59 -32.6 Dark Up 20.6 128.3 Low 11:28:51 - 11:55:07 3949
Victoria 11:41:38 -35.4 Dark Up 20.3 124.8 Low 11:28:30 - 11:54:46 3942
Peachland 11:41:56 -32.6 Dark Up 21.5 128.6 Low 11:28:48 - 11:55:04 3913
Kelowna 11:41:57 -32.4 Dark Up 21.6 128.9 Low 11:28:49 - 11:55:05 3910
Summerland 11:41:56 -32.6 Dark Up 21.6 128.6 Low 11:28:48 - 11:55:04 3907
Penticton 11:41:57 -32.6 Dark Up 21.7 128.7 Low 11:28:49 - 11:55:05 3903
Oliver 11:41:55 -32.7 Dark Up 21.9 128.6 Low 11:28:47 - 11:55:03 3892
Anarchist Mountain Observatory 11:41:53 -32.7 Dark Up 22.1 128.7 Low 11:28:45 - 11:55:01 3884
Okanogan 11:41:49 -33.1 Dark Up 22.4 128.3 Low 11:28:41 - 11:54:57 3868
Manson/Chelan 11:41:45 -33.6 Dark Up 22.4 127.6 Low 11:28:37 - 11:54:53 3864
Brewster 11:41:48 -33.3 Dark Up 22.5 128.0 Low 11:28:40 - 11:54:56 3863
Wenatchee 11:41:41 -33.9 Dark Up 22.6 127.3 Low 11:28:33 - 11:54:49 3852
Ellensburg 11:41:38 -34.2 Dark Up 22.7 126.9 Low 11:28:30 - 11:54:46 3842
Yakima 11:41:35 -34.4 Dark Up 22.9 126.7 Low 11:28:27 - 11:54:43 3829
Toppenish/White Swan 11:41:34 -34.4 Dark Up 23.2 126.8 Low 11:28:26 - 11:54:42 3818
The Dalles 11:41:27 -35.2 Dark Up 23.2 125.8 Low 11:28:19 - 11:54:35 3806
Maupin 11:41:25 -35.3 Dark Up 23.5 125.8 Low 11:28:17 - 11:54:33 3789
PNWRO 11:41:36 -33.5 Dark Up 24.2 128.1 Low 11:28:28 - 11:54:44 3775
Sisters 11:41:17 -35.9 Dark Up 23.7 125.0 Low 11:28:09 - 11:54:25 3767
Bend 11:41:18 -35.8 Dark Up 24.0 125.1 Low 11:28:10 - 11:54:26 3753
Oregon Observatory 11:41:15 -36.0 Dark Up 24.0 124.9 Low 11:28:07 - 11:54:23 3749
Chiloquin 11:41:08 -36.8 Dark Up 24.5 124.1 Low 11:28:00 - 11:54:16 3705
Klamath Falls 11:41:05 -36.8 Dark Up 24.7 124.0 Low 11:27:57 - 11:54:13 3690
Sleaford 11:42:56 -23.5 Dark Up 26.0 143.1 Low 11:29:48 - 11:56:04 3685
Fall River/Burney 11:41:00 -37.0 Dark Up 25.6 123.8 Low 11:27:52 - 11:54:08 3632
Cedarville 11:41:08 -35.9 Dark Up 26.1 125.1 Low 11:28:00 - 11:54:16 3627
Greenville 11:40:55 -37.0 Dark Up 26.4 123.8 Low 11:27:47 - 11:54:03 3582
Gimple 11:40:57 -36.9 Dark Up 26.4 123.9 Low 11:27:49 - 11:54:05 3581
Quincy 11:40:54 -37.0 Dark Up 26.5 123.8 Low 11:27:46 - 11:54:02 3573
Portola 11:40:56 -36.7 Dark Up 26.8 124.1 Low 11:27:48 - 11:54:04 3558
Reno 11:40:56 -36.3 Dark Up 27.4 124.6 Low 11:27:48 - 11:54:04 3531
Carson City 11:40:55 -36.4 Dark Up 27.6 124.4 Low 11:27:47 - 11:54:03 3514
Gardnerville 11:40:54 -36.4 Dark Up 27.8 124.4 Low 11:27:46 - 11:54:02 3501
Yerington 11:40:57 -36.0 Dark Up 28.1 124.9 Low 11:27:49 - 11:54:05 3490
Hawthorne 11:40:55 -35.7 Dark Up 28.7 125.2 Low 11:27:47 - 11:54:03 3456
Lee Vining 11:40:50 -36.2 Dark Up 28.7 124.5 Low 11:27:42 - 11:53:58 3440
Bishop 11:40:48 -35.8 Dark Up 29.5 124.8 Low 11:27:40 - 11:53:56 3393
Beatty 11:40:54 -34.7 Dark Up 30.9 126.0 Up 11:27:46 - 11:54:02 3330
Wildwood 11:40:30 -36.8 Dark Up 31.2 123.0 Up 11:27:22 - 11:53:38 3225
Dunrhomin 11:42:01 -25.0 Dark Up 35.5 139.2 Up 11:28:53 - 11:55:09 3180
Laughlin/Bullhead City 11:40:54 -33.3 Dark Up 33.3 127.1 Up 11:27:46 - 11:54:02 3180
Patrick 11:40:56 -32.6 Dark Up 33.7 127.9 Up 11:27:48 - 11:54:04 3175
Nikitin 11:42:01 -25.0 Dark Up 35.6 139.1 Up 11:28:53 - 11:55:09 3171
CU-SBO 11:42:00 -25.1 Dark Up 35.6 139.0 Up 11:28:52 - 11:55:08 3171
Idyllwild 11:40:35 -35.3 Dark Up 32.7 124.4 Up 11:27:27 - 11:53:43 3158
Lake Havasu City 11:40:50 -33.2 Dark Up 33.9 127.0 Up 11:27:42 - 11:53:58 3136
Calipatria 11:40:37 -34.4 Dark Up 33.9 125.1 Up 11:27:29 - 11:53:45 3090
Yuma 11:40:40 -33.7 Dark Up 34.7 125.7 Up 11:27:32 - 11:53:48 3041
George/Scottsdale 11:40:57 -31.2 Dark Up 36.0 128.8 Up 11:27:49 - 11:54:05 3022

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 556130, (2025/02/18 11:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.31  34
13Zet Oph      16:37:09.6 -10:34:01  2.6  5.49  36
PPM 199844     16:38:01.6 -06:32:17  6.4  2.13  38
PPM 200032     16:48:51.4 -04:30:58  7.6  1.28  41
PPM 199954     16:44:51.7 -05:18:21  9.2  0.22  40
556130         16:45:26.5 -05:28:21 16.5        40
Positions are for J2000

Event circumstances last updated at 2023/05/28 03:50:16 UT

Marc W. Buie, Southwest Research Institute

RECON