RECON: TNO occultation with 250112

Event between (250112) 02KY14 and star GA1020:01969104 with event index number of 165780

Geocentric closest approach at 2018/12/04 13:12:03 UTC

J2000 position of star is 06:33:56.9 +12:04:08
Equinox of date position of star is 06:34:58.8 +12:03:13
Stellar brightness G=10.8, use SENSEUP=4
Star is 122 degrees from the moon. Moon is 8% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 12.9 AU from the Sun and 12.0 AU from the Earth.
The TNO is moving 20.4 km/sec on the sky relative to the star, or, 8.4 arcsec/hr.
The 1-sigma error in the time of the event is 48 seconds.
The 1-sigma cross-track error in the shadow position is 567 km.
The sky-plane scale is 8729.2 km/arcsec.

The TNO has an absolute magnitude Hv=9.7
Diameter=69.2 km assuming a 5% albedo -- 3.4 sec chord
Diameter=28.2 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 250112, (2018/12/04 13:12UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:11.8 +07:24:33  0.4 10.63 131
Alhena         06:38:48.3 +16:22:54  1.9  4.43 121
PPM 122607     06:32:42.8 +11:46:38  6.3  0.63 122
PPM 122633     06:33:26.6 +11:39:30  7.2  0.55 122
PPM 122703     06:35:46.9 +11:59:59  8.9  0.20 121
PPM 122659     06:34:24.3 +11:57:25 11.5  0.18 122
250112         06:35:00.5 +12:03:11 10.8       121
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 23.7 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)
Penticton 13:08:49 -23.0 Dark Up 33.1 247.7 Up 13:04:19 - 13:13:20 4973
Oroville 13:08:48 -22.9 Dark Up 33.2 248.2 Up 13:04:17 - 13:13:18 4919
Tonasket 13:08:47 -22.9 Dark Up 33.3 248.3 Up 13:04:16 - 13:13:17 4897
Okanogan 13:08:46 -22.9 Dark Up 33.5 248.4 Up 13:04:16 - 13:13:17 4865
Brewster 13:08:46 -23.0 Dark Up 33.8 248.4 Up 13:04:16 - 13:13:17 4839
Manson/Chelan 13:08:46 -23.2 Dark Up 34.1 248.2 Up 13:04:16 - 13:13:17 4818
Entiat 13:08:46 -23.2 Dark Up 34.2 248.3 Up 13:04:16 - 13:13:17 4797
Wenatchee 13:08:46 -23.3 Dark Up 34.4 248.3 Up 13:04:15 - 13:13:16 4773
Ellensburg 13:08:45 -23.4 Dark Up 34.6 248.4 Up 13:04:15 - 13:13:16 4733
Yakima 13:08:45 -23.3 Dark Up 34.8 248.6 Up 13:04:14 - 13:13:15 4695
Toppenish/White Swan 13:08:44 -23.2 Dark Up 34.8 248.9 Up 13:04:13 - 13:13:14 4675
Pasco 13:08:40 -22.3 Dark Up 34.0 250.1 Up 13:04:10 - 13:13:11 4669
PNWRO 13:08:39 -22.1 Dark Up 33.9 250.5 Up 13:04:09 - 13:13:10 4646
George/Umatilla 13:08:40 -22.4 Dark Up 34.3 250.1 Up 13:04:09 - 13:13:10 4636
Goldendale 13:08:44 -23.4 Dark Up 35.3 248.9 Up 13:04:13 - 13:13:14 4620
The Dalles 13:08:44 -23.6 Dark Up 35.6 248.7 Up 13:04:13 - 13:13:14 4597
Maupin 13:08:43 -23.5 Dark Up 35.7 249.1 Up 13:04:13 - 13:13:14 4558
Madras/Culver 13:08:41 -23.4 Dark Up 35.9 249.4 Up 13:04:11 - 13:13:12 4505
Sisters 13:08:42 -23.7 Dark Up 36.3 249.2 Up 13:04:11 - 13:13:12 4471
Redmond 13:08:41 -23.4 Dark Up 36.0 249.6 Up 13:04:11 - 13:13:12 4470
Bend 13:08:41 -23.5 Dark Up 36.2 249.6 Up 13:04:10 - 13:13:11 4449
Oregon Observatory 13:08:41 -23.5 Dark Up 36.4 249.6 Up 13:04:10 - 13:13:11 4431
La Pine/Gilchrist 13:08:41 -23.5 Dark Up 36.5 249.7 Up 13:04:10 - 13:13:11 4411
North Lake 13:08:38 -23.1 Dark Up 36.2 250.5 Up 13:04:07 - 13:13:08 4371
Paisley 13:08:36 -22.7 Dark Up 36.2 251.2 Up 13:04:05 - 13:13:06 4318
Chiloquin 13:08:39 -23.6 Dark Up 37.1 250.2 Up 13:04:09 - 13:13:10 4300
Lakeview 13:08:34 -22.5 Dark Up 36.2 251.7 Up 13:04:04 - 13:13:05 4269
Klamath Falls 13:08:38 -23.5 Dark Up 37.2 250.5 Up 13:04:07 - 13:13:08 4267
Tulelake 13:08:37 -23.3 Dark Up 37.0 251.0 Up 13:04:07 - 13:13:08 4241
Cedarville 13:08:32 -22.2 Dark Up 36.3 252.3 Up 13:04:02 - 13:13:03 4205
Niwot 13:07:56 -11.0 CT Up 25.6 264.3 Low 13:03:26 - 13:12:27 4175
Fall River/Burney 13:08:35 -23.0 Dark Up 37.3 251.7 Up 13:04:04 - 13:13:05 4151
Susanville 13:08:32 -22.4 Dark Up 37.0 252.7 Up 13:04:01 - 13:13:02 4091
Gimple 13:08:32 -22.5 Dark Up 37.2 252.8 Up 13:04:01 - 13:13:02 4063
Greenville 13:08:32 -22.6 Dark Up 37.2 252.7 Up 13:04:01 - 13:13:02 4062
Quincy 13:08:32 -22.5 Dark Up 37.3 252.8 Up 13:04:01 - 13:13:02 4042
Portola 13:08:30 -22.1 Dark Up 37.0 253.3 Up 13:04:00 - 13:13:01 4032
Reno 13:08:28 -21.6 Dark Up 36.6 254.0 Up 13:03:57 - 13:12:58 4008
Carson City 13:08:27 -21.5 Dark Up 36.7 254.3 Up 13:03:56 - 13:12:57 3972
Yerington 13:08:25 -21.0 Dark Up 36.3 254.9 Up 13:03:54 - 13:12:55 3955
Gardnerville 13:08:27 -21.4 Dark Up 36.7 254.5 Up 13:03:56 - 13:12:57 3947
Hawthorne 13:08:23 -20.5 Dark Up 36.0 255.6 Up 13:03:52 - 13:12:53 3911
Tonopah 13:08:18 -19.3 Dark Up 35.0 257.0 Up 13:03:48 - 13:12:49 3871
Lee Vining 13:08:23 -20.8 Dark Up 36.5 255.7 Up 13:03:52 - 13:12:53 3851
Bishop 13:08:20 -20.1 Dark Up 36.1 256.6 Up 13:03:49 - 13:12:50 3793
Beatty 13:08:15 -18.7 Dark Up 34.9 258.1 Up 13:03:45 - 13:12:46 3756
Indian Springs 13:08:12 -17.8 AT Up 34.2 259.1 Up 13:03:41 - 13:12:42 3729
Lone Pine 13:08:18 -19.6 Dark Up 36.0 257.4 Up 13:03:47 - 13:12:48 3717
Henderson 13:08:08 -17.1 AT Up 33.7 259.9 Up 13:03:38 - 13:12:39 3679
Patrick 13:08:05 -16.1 AT Up 32.9 261.1 Up 13:03:34 - 13:12:35 3622
Searchlight/Boulder City 13:08:08 -16.9 AT Up 33.8 260.4 Up 13:03:37 - 13:12:38 3620
Kingman/Dolan Springs 13:08:05 -16.2 AT Up 33.1 261.1 Up 13:03:34 - 13:12:35 3597
DCO 13:08:02 -15.5 AT Up 32.4 261.7 Up 13:03:32 - 13:12:33 3596
Laughlin/Bullhead City 13:08:06 -16.6 AT Up 33.6 260.8 Up 13:03:35 - 13:12:36 3591
CPSLO 13:08:23 -21.4 Dark Up 38.3 256.5 Up 13:03:52 - 13:12:53 3569
Mohave Valley 13:08:05 -16.5 AT Up 33.6 261.0 Up 13:03:35 - 13:12:36 3563
Lake Havasu City 13:08:04 -16.2 AT Up 33.5 261.4 Up 13:03:34 - 13:12:35 3523
Parker 13:08:04 -16.1 AT Up 33.5 261.6 Up 13:03:33 - 13:12:34 3487
Wildwood 13:08:15 -19.5 Dark Up 37.0 258.8 Up 13:03:44 - 13:12:45 3453
Blythe 13:08:04 -16.2 AT Up 33.8 261.8 Up 13:03:33 - 13:12:34 3430
Idyllwild 13:08:09 -17.9 AT Up 35.5 260.3 Up 13:03:39 - 13:12:40 3427
Calipatria 13:08:05 -16.8 AT Up 34.6 261.5 Up 13:03:34 - 13:12:35 3371
Yuma 13:08:02 -15.9 AT Up 34.0 262.4 Up 13:03:31 - 13:12:32 3332

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 250112, (2018/12/04 13:12UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 10.63 131
Alhena         06:37:42.8 +16:23:57  1.9  4.43 121
PPM 122607     06:31:39.4 +11:47:32  6.3  0.63 122
PPM 122633     06:32:23.3 +11:40:24  7.2  0.55 122
PPM 122703     06:34:43.4 +12:00:57  8.9  0.20 121
PPM 122659     06:33:20.8 +11:58:21 11.5  0.18 122
250112         06:33:56.9 +12:04:08 10.8       121
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:37:24 UT

Marc W. Buie, Southwest Research Institute

RECON