RECON: TNO occultation with 44594

Event between (44594) 99OX3 and star GA1100:00557388 with event index number of 2291522

Geocentric closest approach at 2027/11/17 05:09:31 UTC

J2000 position of star is 04:16:14.8 +21:58:05
Equinox of date position of star is 04:17:40.9 +22:01:36
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 28 degrees from the moon. Moon is 88% illuminated.
Apparent brightness V=19.6

[RECON map]
Object is 18.0 AU from the Sun and 17.0 AU from the Earth.
Apparent velocity is 21.2 km/sec on the sky relative to the star, or, 6.2 arcsec/hr.
The 1-sigma error in the time of the event is 84 seconds.
The 1-sigma cross-track error in the shadow position is 732 km.
The sky-plane scale is 12355.6 km/arcsec.

The object has an absolute magnitude Hv=7.1
Diameter=231.2 km assuming a 5% albedo -- 11.0 sec chord
Diameter=94.4 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 44594, (2027/11/17 05:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.4 +16:33:48  0.8  7.17  26
44Zet Per      03:55:53.5 +31:57:51  2.8 11.07  32
51 Tau         04:20:02.4 +21:38:42  5.6  0.63  28
PPM 093353     04:16:10.1 +22:31:13  7.7  0.63  29
PPM 093383     04:18:12.9 +21:58:28  9.6  0.10  28
44594          04:17:54.1 +22:02:08 16.6        28
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 26.7 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:11:26 -45.9 Dark Up 41.5 107.0 Up 05:03:58 - 05:18:54 4000
Victoria 05:11:40 -45.3 Dark Up 40.2 102.5 Up 05:04:12 - 05:19:08 3933
Peachland 05:11:28 -46.8 Dark Up 42.2 106.8 Up 05:04:00 - 05:18:56 3916
Kelowna 05:11:27 -46.9 Dark Up 42.3 107.2 Up 05:03:59 - 05:18:55 3915
Summerland 05:11:29 -46.9 Dark Up 42.3 106.7 Up 05:04:01 - 05:18:57 3902
Penticton 05:11:29 -47.0 Dark Up 42.4 106.8 Up 05:04:01 - 05:18:57 3894
Oliver 05:11:30 -47.2 Dark Up 42.5 106.5 Up 05:04:02 - 05:18:58 3868
Anarchist Mountain Observatory 05:11:31 -47.4 Dark Up 42.6 106.5 Up 05:04:03 - 05:18:59 3850
Okanogan 05:11:33 -47.6 Dark Up 42.7 105.8 Up 05:04:05 - 05:19:01 3807
Brewster 05:11:34 -47.6 Dark Up 42.6 105.3 Up 05:04:06 - 05:19:02 3793
Manson/Chelan 05:11:36 -47.5 Dark Up 42.5 104.8 Up 05:04:08 - 05:19:04 3788
Wenatchee 05:11:38 -47.6 Dark Up 42.5 104.3 Up 05:04:10 - 05:19:06 3757
Ellensburg 05:11:40 -47.7 Dark Up 42.4 103.7 Up 05:04:12 - 05:19:08 3732
Sleaford 05:10:50 -51.7 Dark Up 49.0 123.3 Up 05:03:22 - 05:18:18 3720
Yakima 05:11:42 -47.9 Dark Up 42.5 103.3 Up 05:04:14 - 05:19:10 3701
Toppenish/White Swan 05:11:42 -48.1 Dark Up 42.7 103.3 Up 05:04:14 - 05:19:10 3679
The Dalles 05:11:46 -48.0 Dark Up 42.3 101.9 Up 05:04:18 - 05:19:14 3643
Maupin 05:11:48 -48.2 Dark Up 42.5 101.6 Up 05:04:20 - 05:19:16 3608
PNWRO 05:11:40 -49.2 Dark Up 43.8 104.3 Up 05:04:12 - 05:19:08 3604
Sisters 05:11:52 -48.3 Dark Up 42.3 100.5 Up 05:04:24 - 05:19:20 3554
Bend 05:11:52 -48.6 Dark Up 42.6 100.5 Up 05:04:24 - 05:19:20 3527
Oregon Observatory 05:11:53 -48.5 Dark Up 42.5 100.2 Up 05:04:25 - 05:19:21 3517
Chiloquin 05:11:59 -48.8 Dark Up 42.4 98.7 Up 05:04:31 - 05:19:27 3425
Klamath Falls 05:12:00 -49.0 Dark Up 42.5 98.5 Up 05:04:32 - 05:19:28 3395
Fall River/Burney 05:12:03 -49.7 Dark Up 43.0 97.7 Up 05:04:35 - 05:19:31 3285
Cedarville 05:11:59 -50.4 Dark Up 43.8 99.1 Up 05:04:31 - 05:19:27 3284
Greenville 05:12:05 -50.3 Dark Up 43.5 97.2 Up 05:04:37 - 05:19:33 3194
Gimple 05:12:05 -50.4 Dark Up 43.5 97.2 Up 05:04:37 - 05:19:33 3191
Quincy 05:12:06 -50.4 Dark Up 43.5 97.0 Up 05:04:38 - 05:19:34 3177
Portola 05:12:05 -50.8 Dark Up 43.9 97.2 Up 05:04:37 - 05:19:33 3151
Reno 05:12:05 -51.4 Dark Up 44.4 97.4 Up 05:04:37 - 05:19:33 3106
Carson City 05:12:06 -51.5 Dark Up 44.5 97.1 Up 05:04:38 - 05:19:34 3074
Gardnerville 05:12:07 -51.6 Dark Up 44.5 96.9 Up 05:04:39 - 05:19:35 3052
Yerington 05:12:05 -52.0 Dark Up 45.0 97.4 Up 05:04:37 - 05:19:33 3036
Hawthorne 05:12:05 -52.6 Dark Up 45.4 97.3 Up 05:04:37 - 05:19:33 2977
Lee Vining 05:12:08 -52.4 Dark Up 45.1 96.4 Up 05:04:40 - 05:19:36 2946
Bishop 05:12:08 -53.2 Dark Up 45.8 96.3 Up 05:04:40 - 05:19:36 2868
Beatty 05:12:06 -54.6 Dark Up 47.1 97.0 Up 05:04:38 - 05:19:34 2769
Dunrhomin 05:11:23 -60.6 Dark Up 55.0 110.8 Up 05:03:55 - 05:18:51 2689
Nikitin 05:11:24 -60.7 Dark Up 55.0 110.5 Up 05:03:56 - 05:18:52 2673
CU-SBO 05:11:24 -60.7 Dark Up 55.0 110.3 Up 05:03:56 - 05:18:52 2670
Wildwood 05:12:19 -54.1 Dark Up 45.9 92.8 Up 05:04:51 - 05:19:47 2583
Laughlin/Bullhead City 05:12:05 -56.8 Dark Up 49.1 96.5 Up 05:04:37 - 05:19:33 2536
Patrick 05:12:02 -57.3 Dark Up 49.6 97.3 Up 05:04:34 - 05:19:30 2534
Idyllwild 05:12:15 -55.6 Dark Up 47.5 93.6 Up 05:04:47 - 05:19:43 2482
Lake Havasu City 05:12:06 -57.3 Dark Up 49.4 95.9 Up 05:04:38 - 05:19:34 2465
Calipatria 05:12:14 -56.8 Dark Up 48.5 93.6 Up 05:04:46 - 05:19:42 2382
Yuma 05:12:12 -57.6 Dark Up 49.3 93.7 Up 05:04:44 - 05:19:40 2310
George/Scottsdale 05:12:01 -59.4 Dark Up 51.5 96.7 Up 05:04:33 - 05:19:29 2306

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 44594, (2027/11/17 05:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  7.17  26
44Zet Per      03:54:07.9 +31:53:01  2.8 11.07  32
51 Tau         04:18:23.3 +21:34:45  5.6  0.63  28
PPM 093353     04:14:30.6 +22:27:06  7.7  0.63  29
PPM 093383     04:16:33.7 +21:54:26  9.6  0.10  28
44594          04:16:14.8 +21:58:05 16.6        28
Positions are for J2000

Event circumstances last updated at 2024/03/06 04:34:18 UT

Marc W. Buie, Southwest Research Institute

RECON