RECON: TNO occultation with 530055

Event between (530055) 10VW224 and star GA1080:00954277 with event index number of 2435670

Geocentric closest approach at 2023/10/29 10:02:56 UTC

J2000 position of star is 05:20:29.0 +19:38:14
Equinox of date position of star is 05:21:50.5 +19:39:31
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 38 degrees from the moon. Moon is 100% illuminated.
Apparent brightness V=22.6

[RECON map]
Object is 49.7 AU from the Sun and 49.0 AU from the Earth.
Apparent velocity is 17.5 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 310 seconds.
The 1-sigma cross-track error in the shadow position is 2482 km.
The sky-plane scale is 35559.1 km/arcsec.

The object has an absolute magnitude Hv=5.6
Diameter=478.6 km assuming a 5% albedo -- 26.7 sec chord
Diameter=195.4 km assuming a 30% albedo -- 10.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 530055, (2023/10/29 09:57UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:17.4 +16:33:19  0.8 11.04  28
Alnath         05:27:48.0 +28:37:31  1.6  9.07  40
PPM 120839     05:21:42.7 +19:36:02  6.5  0.07  38
530055         05:21:53.5 +19:39:34 15.3        38
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 2.9 sigma about the mid-time.
The median site spacing is 30.8 km RECON observability=1.0 and success probability=3.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:03:27 -43.4 Dark Up 57.5 158.4 Up 09:48:27 - 10:18:27 7908
Sleaford 10:02:29 -35.2 Dark Up 57.5 183.6 Up 09:47:29 - 10:17:29 7904
Kelowna 10:03:24 -43.5 Dark Up 58.5 159.4 Up 09:48:24 - 10:18:24 7821
Peachland 10:03:26 -43.7 Dark Up 58.5 158.8 Up 09:48:26 - 10:18:26 7815
Summerland 10:03:26 -43.8 Dark Up 58.7 158.9 Up 09:48:26 - 10:18:26 7799
Penticton 10:03:25 -43.7 Dark Up 58.8 159.1 Up 09:48:25 - 10:18:25 7792
Oliver 10:03:26 -44.0 Dark Up 59.1 158.9 Up 09:48:26 - 10:18:26 7759
Victoria 10:03:43 -46.3 Dark Up 58.6 151.8 Up 09:48:43 - 10:18:43 7747
Anarchist Mountain Observatory 10:03:25 -44.0 Dark Up 59.3 159.1 Up 09:48:25 - 10:18:25 7741
Okanogan 10:03:27 -44.5 Dark Up 59.8 158.3 Up 09:48:27 - 10:18:27 7682
Brewster 10:03:28 -44.7 Dark Up 60.0 157.8 Up 09:48:28 - 10:18:28 7659
Manson/Chelan 10:03:30 -45.1 Dark Up 60.1 157.0 Up 09:48:30 - 10:18:30 7644
Wenatchee 10:03:32 -45.4 Dark Up 60.5 156.4 Up 09:48:32 - 10:18:32 7601
Ellensburg 10:03:34 -45.8 Dark Up 60.9 155.7 Up 09:48:34 - 10:18:34 7564
Yakima 10:03:34 -46.1 Dark Up 61.2 155.3 Up 09:48:34 - 10:18:34 7525
Toppenish/White Swan 10:03:33 -46.1 Dark Up 61.5 155.5 Up 09:48:33 - 10:18:33 7502
PNWRO 10:03:27 -45.5 Dark Up 62.2 158.0 Up 09:48:27 - 10:18:27 7447
The Dalles 10:03:38 -47.0 Dark Up 61.9 153.4 Up 09:48:38 - 10:18:38 7438
Maupin 10:03:38 -47.2 Dark Up 62.3 153.3 Up 09:48:38 - 10:18:38 7396
Sisters 10:03:42 -48.0 Dark Up 63.0 151.6 Up 09:48:42 - 10:18:42 7317
Bend 10:03:41 -48.0 Dark Up 63.3 151.8 Up 09:48:41 - 10:18:41 7290
Oregon Observatory 10:03:42 -48.2 Dark Up 63.4 151.4 Up 09:48:42 - 10:18:42 7275
Chiloquin 10:03:46 -49.2 Dark Up 64.4 149.3 Up 09:48:46 - 10:18:46 7151
Klamath Falls 10:03:46 -49.3 Dark Up 64.7 149.1 Up 09:48:46 - 10:18:46 7116
Cedarville 10:03:40 -48.7 Dark Up 65.9 151.6 Up 09:48:40 - 10:18:40 7023
Fall River/Burney 10:03:46 -49.8 Dark Up 65.9 148.6 Up 09:48:46 - 10:18:46 6992
Greenville 10:03:45 -50.0 Dark Up 66.8 148.4 Up 09:48:45 - 10:18:45 6894
Gimple 10:03:45 -49.9 Dark Up 66.8 148.6 Up 09:48:45 - 10:18:45 6893
Quincy 10:03:46 -50.1 Dark Up 67.0 148.2 Up 09:48:46 - 10:18:46 6874
Portola 10:03:44 -49.8 Dark Up 67.3 149.1 Up 09:48:44 - 10:18:44 6854
Reno 10:03:41 -49.5 Dark Up 67.8 150.2 Up 09:48:41 - 10:18:41 6817
Carson City 10:03:42 -49.7 Dark Up 68.1 149.8 Up 09:48:42 - 10:18:42 6780
Gardnerville 10:03:42 -49.8 Dark Up 68.3 149.6 Up 09:48:42 - 10:18:42 6755
Yerington 10:03:40 -49.4 Dark Up 68.5 151.0 Up 09:48:40 - 10:18:40 6751
Dunrhomin 10:02:30 -39.2 Dark Up 69.2 187.5 Up 09:47:30 - 10:17:30 6727
Nikitin 10:02:31 -39.3 Dark Up 69.4 187.5 Up 09:47:31 - 10:17:31 6708
CU-SBO 10:02:32 -39.3 Dark Up 69.5 187.4 Up 09:47:32 - 10:17:32 6702
Hawthorne 10:03:37 -49.2 Dark Up 69.1 151.7 Up 09:48:37 - 10:18:37 6696
Lee Vining 10:03:40 -49.8 Dark Up 69.4 149.8 Up 09:48:40 - 10:18:40 6645
Bishop 10:03:37 -49.6 Dark Up 70.2 150.7 Up 09:48:37 - 10:18:37 6572
Beatty 10:03:30 -48.7 Dark Up 71.2 154.4 Up 09:48:30 - 10:18:30 6501
Patrick 10:03:17 -47.1 Dark Up 73.5 160.9 Up 09:48:17 - 10:18:17 6307
Laughlin/Bullhead City 10:03:21 -47.7 Dark Up 73.5 158.4 Up 09:48:21 - 10:18:21 6291
Wildwood 10:03:42 -51.1 Dark Up 72.9 145.0 Up 09:48:42 - 10:18:42 6234
Lake Havasu City 10:03:20 -47.8 Dark Up 74.2 158.4 Up 09:48:20 - 10:18:20 6216
Idyllwild 10:03:34 -49.8 Dark Up 74.0 149.8 Up 09:48:34 - 10:18:34 6168
George/Scottsdale 10:03:09 -46.1 Dark Up 75.5 165.9 Up 09:48:09 - 10:18:09 6103
Calipatria 10:03:28 -49.1 Dark Up 75.0 152.4 Up 09:48:28 - 10:18:28 6087
Yuma 10:03:24 -48.6 Dark Up 75.7 154.7 Up 09:48:24 - 10:18:24 6029

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 530055, (2023/10/29 09:57UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 11.04  28
Alnath         05:26:17.6 +28:36:23  1.6  9.07  40
PPM 120839     05:20:18.3 +19:34:41  6.5  0.07  38
530055         05:20:29.0 +19:38:14 15.3        38
Positions are for J2000

Event circumstances last updated at 2022/12/24 03:46:42 UT

Marc W. Buie, Southwest Research Institute

RECON