RECON: TNO occultation with 386968

Event between (386968) 12BR61 and star GA0640:25550665 with event index number of 2214608

Geocentric closest approach at 2027/03/08 12:26:19 UTC

J2000 position of star is 18:15:42.7 -25:13:20
Equinox of date position of star is 18:17:12.2 -25:12:45
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 76 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 16.7 AU from the Sun and 16.9 AU from the Earth.
Apparent velocity is 16.0 km/sec on the sky relative to the star, or, 4.7 arcsec/hr.
The 1-sigma error in the time of the event is 74 seconds.
The 1-sigma cross-track error in the shadow position is 614 km.
The sky-plane scale is 12283.4 km/arcsec.

The object has an absolute magnitude Hv=9.3
Diameter=82.8 km assuming a 5% albedo -- 5.2 sec chord
Diameter=33.8 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 386968, (2027/03/08 12:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:04.7 -26:29:24  0.9 23.91 100
Nunki          18:56:56.9 -26:15:37  2.0  8.97  67
PPM 268291     18:23:11.8 -24:54:01  6.0  1.35  74
PPM 268191     18:19:16.8 -25:19:47  8.2  0.44  75
PPM 268125     18:16:46.9 -25:02:40  9.4  0.22  76
386968         18:17:23.4 -25:12:41 16.8        75
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 0.0 km RECON observability=0.1 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)
Sleaford 12:24:09 -11.6 NT Down 8.9 154.7 Really Low 12:17:29 - 12:30:48 4639
Kamloops 12:23:13 -20.8 Dark Down 5.3 142.1 Really Low 12:16:34 - 12:29:53 4310
Kelowna 12:23:14 -20.5 Dark Down 6.3 142.8 Really Low 12:16:34 - 12:29:53 4298
Peachland 12:23:12 -20.7 Dark Down 6.3 142.6 Really Low 12:16:32 - 12:29:51 4287
Summerland 12:23:12 -20.7 Dark Down 6.5 142.6 Really Low 12:16:32 - 12:29:51 4283
Penticton 12:23:12 -20.6 Dark Down 6.6 142.7 Really Low 12:16:32 - 12:29:51 4282
Oliver 12:23:10 -20.8 Dark Down 6.8 142.7 Really Low 12:16:31 - 12:29:50 4268
Anarchist Mountain Observatory 12:23:11 -20.7 Dark Down 7.0 142.8 Really Low 12:16:31 - 12:29:50 4266
Okanogan 12:23:08 -21.0 Dark Down 7.5 142.6 Really Low 12:16:28 - 12:29:47 4233
Brewster 12:23:06 -21.2 Dark Down 7.6 142.4 Really Low 12:16:26 - 12:29:45 4216
Manson/Chelan 12:23:04 -21.5 Dark Down 7.6 142.1 Really Low 12:16:25 - 12:29:44 4199
Wenatchee 12:23:02 -21.8 Dark Down 7.9 141.9 Really Low 12:16:23 - 12:29:42 4174
Dunrhomin 12:23:45 -12.2 AT Down 19.8 154.0 Really Low 12:17:05 - 12:30:24 4171
Nikitin 12:23:45 -12.3 AT Down 20.0 153.9 Really Low 12:17:05 - 12:30:24 4161
CU-SBO 12:23:44 -12.3 AT Down 20.0 153.8 Really Low 12:17:05 - 12:30:24 4156
Ellensburg 12:23:00 -22.1 Dark Down 8.1 141.7 Really Low 12:16:20 - 12:29:39 4150
Victoria 12:22:55 -23.4 Dark Down 5.7 139.5 Really Low 12:16:16 - 12:29:35 4148
PNWRO 12:23:02 -21.3 Dark Down 9.6 142.9 Really Low 12:16:22 - 12:29:41 4144
Yakima 12:22:58 -22.2 Dark Down 8.4 141.6 Really Low 12:16:18 - 12:29:37 4131
Toppenish/White Swan 12:22:58 -22.2 Dark Down 8.7 141.7 Really Low 12:16:18 - 12:29:37 4125
The Dalles 12:22:53 -22.9 Dark Down 8.9 141.0 Really Low 12:16:13 - 12:29:32 4068
Maupin 12:22:51 -23.0 Dark Down 9.3 141.0 Really Low 12:16:12 - 12:29:31 4051
Sisters 12:22:47 -23.6 Dark Down 9.8 140.5 Really Low 12:16:07 - 12:29:26 3995
Bend 12:22:47 -23.5 Dark Down 10.1 140.7 Really Low 12:16:07 - 12:29:26 3990
Oregon Observatory 12:22:46 -23.6 Dark Down 10.1 140.6 Really Low 12:16:06 - 12:29:25 3977
Chiloquin 12:22:40 -24.3 Dark Down 10.9 140.1 Really Low 12:16:01 - 12:29:20 3898
Cedarville 12:22:43 -23.4 Dark Down 12.5 141.3 Really Low 12:16:03 - 12:29:22 3887
Klamath Falls 12:22:39 -24.4 Dark Down 11.2 140.1 Really Low 12:15:59 - 12:29:18 3882
Fall River/Burney 12:22:37 -24.4 Dark Down 12.3 140.2 Really Low 12:15:57 - 12:29:16 3827
Gimple 12:22:36 -24.3 Dark Down 13.3 140.5 Really Low 12:15:57 - 12:29:16 3791
Greenville 12:22:36 -24.4 Dark Down 13.2 140.4 Really Low 12:15:56 - 12:29:15 3789
Reno 12:22:38 -23.6 Dark Down 14.3 141.3 Really Low 12:15:59 - 12:29:18 3786
Portola 12:22:37 -24.1 Dark Down 13.7 140.8 Really Low 12:15:57 - 12:29:16 3784
Quincy 12:22:35 -24.4 Dark Down 13.4 140.4 Really Low 12:15:55 - 12:29:14 3777
Yerington 12:22:40 -23.3 Dark Down 15.0 141.7 Really Low 12:16:00 - 12:29:19 3772
Carson City 12:22:37 -23.7 Dark Down 14.5 141.2 Really Low 12:15:58 - 12:29:17 3766
Hawthorne 12:22:41 -23.0 Dark Down 15.6 142.0 Really Low 12:16:01 - 12:29:20 3760
Gardnerville 12:22:37 -23.7 Dark Down 14.8 141.2 Really Low 12:15:57 - 12:29:16 3754
Beatty 12:22:44 -21.8 Dark Down 17.8 143.3 Really Low 12:16:04 - 12:29:23 3714
Lee Vining 12:22:36 -23.5 Dark Down 15.8 141.5 Really Low 12:15:57 - 12:29:16 3714
Patrick 12:22:53 -19.8 Dark Down 20.4 145.3 Low 12:16:14 - 12:29:33 3700
Bishop 12:22:39 -23.1 Dark Down 16.7 142.0 Really Low 12:15:59 - 12:29:18 3698
Laughlin/Bullhead City 12:22:49 -20.4 Dark Down 20.3 144.7 Low 12:16:10 - 12:29:29 3666
George/Scottsdale 12:22:59 -18.3 Dark Down 22.8 146.7 Low 12:16:20 - 12:29:39 3646
Lake Havasu City 12:22:49 -20.3 Dark Down 21.0 144.8 Low 12:16:09 - 12:29:28 3631
Idyllwild 12:22:36 -22.4 Dark Down 20.4 142.6 Low 12:15:57 - 12:29:16 3518
Calipatria 12:22:40 -21.5 Dark Down 21.5 143.4 Low 12:16:01 - 12:29:20 3510
Yuma 12:22:43 -20.8 Dark Down 22.3 144.1 Low 12:16:04 - 12:29:23 3507
Wildwood 12:22:29 -23.9 Dark Down 19.1 141.2 Really Low 12:15:49 - 12:29:08 3487

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 386968, (2027/03/08 12:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 23.91 100
Nunki          18:55:15.9 -26:17:49  2.0  8.97  67
PPM 268291     18:21:31.4 -24:54:54  6.0  1.35  74
PPM 268191     18:17:36.1 -25:20:31  8.2  0.44  75
PPM 268125     18:15:06.4 -25:03:18  9.4  0.22  76
386968         18:15:42.7 -25:13:20 16.8        76
Positions are for J2000

Event circumstances last updated at 2024/03/05 05:04:24 UT

Marc W. Buie, Southwest Research Institute

RECON