RECON: TNO occultation with 00WT169

Event between 00WT169 and star GA1120:01808165 with event index number of 1031369

Geocentric closest approach at 2021/01/13 05:47:12 UTC

J2000 position of star is 06:07:41.7 +22:52:08
Equinox of date position of star is 06:08:51.2 +22:51:54
Stellar brightness G=15.4, use SENSEUP=128
Star is 158 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 45.1 AU from the Sun and 44.2 AU from the Earth.
The TNO is moving 23.9 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 2025 seconds.
The 1-sigma cross-track error in the shadow position is 1850 km.
The sky-plane scale is 32028.3 km/arcsec.

The TNO has an absolute magnitude Hv=6.2
Diameter=353.2 km assuming a 5% albedo -- 14.8 sec chord
Diameter=144.2 km assuming a 30% albedo -- 6.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 00WT169, (2021/01/13 05:47UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:18.7 +07:24:33  0.4 15.75 149
Alhena         06:38:55.6 +16:22:46  1.9  9.58 163
3 Gem          06:11:00.7 +23:06:29  5.5  0.53 158
PPM 095439     06:09:03.2 +22:42:12  8.3  0.16 158
00WT169        06:08:58.3 +22:51:52 15.4       158
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 0.4 sigma about the mid-time.
The median site spacing is 23.3 km RECON observability=1.0 and success probability=14.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:47:50 -50.6 Dark Down 61.5 157.5 Up 05:32:50 - 06:02:50 3925
Summerland 05:47:51 -50.5 Dark Down 61.5 156.8 Up 05:32:51 - 06:02:51 3922
Penticton 05:47:51 -50.7 Dark Down 61.8 156.9 Up 05:32:51 - 06:02:51 3890
Okanagan Falls 05:47:51 -50.8 Dark Down 62.0 156.8 Up 05:32:51 - 06:02:51 3871
Oliver 05:47:51 -50.9 Dark Down 62.1 156.7 Up 05:32:51 - 06:02:51 3855
Anarchist Mountain Observatory 05:47:51 -51.1 Dark Down 62.4 156.9 Up 05:32:51 - 06:02:51 3837
Oroville 05:47:51 -51.1 Dark Down 62.4 156.7 Up 05:32:51 - 06:02:51 3830
Tonasket 05:47:51 -51.3 Dark Down 62.6 156.5 Up 05:32:51 - 06:02:51 3807
Okanogan 05:47:52 -51.4 Dark Down 62.9 156.0 Up 05:32:52 - 06:02:52 3774
Brewster 05:47:52 -51.4 Dark Down 63.1 155.4 Up 05:32:52 - 06:02:52 3747
Manson/Chelan 05:47:53 -51.3 Dark Down 63.2 154.5 Up 05:32:53 - 06:02:53 3728
Entiat 05:47:54 -51.4 Dark Down 63.3 154.2 Up 05:32:54 - 06:02:54 3706
Wenatchee 05:47:55 -51.4 Dark Down 63.5 153.8 Up 05:32:55 - 06:02:55 3681
Ellensburg 05:47:55 -51.5 Dark Down 63.8 153.0 Up 05:32:55 - 06:02:55 3640
Yakima 05:47:56 -51.7 Dark Down 64.2 152.6 Up 05:32:56 - 06:02:56 3599
Toppenish/White Swan 05:47:55 -51.9 Dark Down 64.4 152.7 Up 05:32:55 - 06:02:55 3576
Pasco 05:47:52 -52.7 Dark Down 64.9 155.1 Up 05:32:52 - 06:02:52 3559
PNWRO 05:47:51 -53.0 Dark Down 65.2 155.4 Up 05:32:51 - 06:02:51 3532
George/Umatilla 05:47:52 -52.7 Dark Down 65.2 154.4 Up 05:32:52 - 06:02:52 3525
Goldendale 05:47:57 -51.9 Dark Down 64.8 151.3 Up 05:32:57 - 06:02:57 3522
The Dalles 05:47:59 -51.8 Dark Down 64.9 150.3 Up 05:32:59 - 06:02:59 3501
Maupin 05:47:59 -52.0 Dark Down 65.3 150.1 Up 05:32:59 - 06:02:59 3458
Madras/Culver 05:47:59 -52.2 Dark Down 65.7 149.4 Up 05:32:59 - 06:02:59 3402
Sisters 05:48:01 -52.1 Dark Down 65.9 148.1 Up 05:33:01 - 06:03:01 3370
Redmond 05:47:59 -52.4 Dark Down 66.0 148.9 Up 05:32:59 - 06:02:59 3365
Bend 05:48:00 -52.4 Dark Down 66.2 148.4 Up 05:33:00 - 06:03:00 3344
Oregon Observatory 05:48:00 -52.4 Dark Down 66.2 147.9 Up 05:33:00 - 06:03:00 3327
La Pine/Gilchrist 05:48:01 -52.4 Dark Down 66.4 147.5 Up 05:33:01 - 06:03:01 3306
North Lake 05:47:59 -53.0 Dark Down 67.0 148.2 Up 05:32:59 - 06:02:59 3258
Paisley 05:47:58 -53.4 Dark Down 67.6 148.3 Up 05:32:58 - 06:02:58 3198
Chiloquin 05:48:03 -52.6 Dark Down 67.2 145.4 Up 05:33:03 - 06:03:03 3192
Klamath Falls 05:48:03 -52.8 Dark Down 67.5 145.1 Up 05:33:03 - 06:03:03 3156
Lakeview 05:47:58 -53.8 Dark Down 68.1 148.1 Up 05:32:58 - 06:02:58 3144
Tulelake 05:48:02 -53.1 Dark Down 67.9 145.3 Up 05:33:02 - 06:03:02 3126
Cedarville 05:47:58 -54.2 Dark Down 68.7 147.6 Up 05:32:58 - 06:02:58 3075
Fall River/Burney 05:48:02 -53.5 Dark Down 68.6 144.2 Up 05:33:02 - 06:03:02 3030
Susanville 05:48:00 -54.3 Dark Down 69.5 144.9 Up 05:33:00 - 06:03:00 2960
Greenville 05:48:01 -54.1 Dark Down 69.6 143.8 Up 05:33:01 - 06:03:01 2932
Gimple 05:48:01 -54.2 Dark Down 69.6 144.0 Up 05:33:01 - 06:03:01 2932
Niwot 05:47:05 -64.4 Dark Down 72.6 188.1 Up 05:32:05 - 06:02:05 2913
Quincy 05:48:01 -54.2 Dark Down 69.7 143.5 Up 05:33:01 - 06:03:01 2911
SwRI 05:47:06 -64.4 Dark Down 72.7 187.8 Up 05:32:06 - 06:02:06 2902
Portola 05:48:00 -54.6 Dark Down 70.0 144.4 Up 05:33:00 - 06:03:00 2895
Reno 05:47:58 -55.2 Dark Down 70.5 145.5 Up 05:32:58 - 06:02:58 2864
Carson City 05:47:57 -55.3 Dark Down 70.8 145.0 Up 05:32:57 - 06:02:57 2825
Yerington 05:47:55 -55.8 Dark Down 71.3 146.2 Up 05:32:55 - 06:02:55 2802
Gardnerville 05:47:58 -55.4 Dark Down 71.1 144.7 Up 05:32:58 - 06:02:58 2799
Hawthorne 05:47:54 -56.4 Dark Down 71.9 146.8 Up 05:32:54 - 06:02:54 2750
Tonopah 05:47:49 -57.6 Dark Down 72.9 149.8 Up 05:32:49 - 06:02:49 2695
Lee Vining 05:47:56 -56.2 Dark Down 72.1 144.5 Up 05:32:56 - 06:02:56 2692
Bishop 05:47:53 -56.9 Dark Down 73.0 145.4 Up 05:32:53 - 06:02:53 2625
Beatty 05:47:47 -58.3 Dark Down 74.0 149.1 Up 05:32:47 - 06:02:47 2569
Lone Pine 05:47:52 -57.4 Dark Down 73.7 144.8 Up 05:32:52 - 06:02:52 2541
Indian Springs 05:47:44 -59.2 Dark Down 74.8 151.9 Up 05:32:44 - 06:02:44 2531
Henderson 05:47:41 -59.9 Dark Down 75.5 153.2 Up 05:32:41 - 06:02:41 2471
CPSLO 05:48:03 -55.8 Dark Down 73.4 135.1 Up 05:33:03 - 06:03:03 2414
Searchlight/Boulder City 05:47:41 -60.2 Dark Down 76.0 152.4 Up 05:32:41 - 06:02:41 2409
Patrick 05:47:37 -61.0 Dark Down 76.4 156.0 Up 05:32:37 - 06:02:37 2401
Kingman/Dolan Springs 05:47:38 -60.9 Dark Down 76.6 154.9 Up 05:32:38 - 06:02:38 2377
Laughlin/Bullhead City 05:47:40 -60.5 Dark Down 76.4 153.0 Up 05:32:40 - 06:02:40 2376
DCO 05:47:35 -61.6 Dark Down 76.9 158.1 Up 05:32:35 - 06:02:35 2367
Mohave Valley 05:47:40 -60.6 Dark Down 76.7 152.5 Up 05:32:40 - 06:02:40 2346
Lake Havasu City 05:47:39 -61.0 Dark Down 77.1 152.6 Up 05:32:39 - 06:02:39 2302
Wildwood 05:47:56 -57.7 Dark Down 75.4 137.6 Up 05:32:56 - 06:02:56 2272
Parker 05:47:39 -61.1 Dark Down 77.4 152.0 Up 05:32:39 - 06:02:39 2264
Idyllwild 05:47:48 -59.3 Dark Down 76.7 142.5 Up 05:32:48 - 06:02:48 2226
Blythe 05:47:40 -61.0 Dark Down 77.8 149.7 Up 05:32:40 - 06:02:40 2208
Calipatria 05:47:44 -60.4 Dark Down 77.8 145.0 Up 05:32:44 - 06:02:44 2156
Yuma 05:47:40 -61.2 Dark Down 78.5 147.3 Up 05:32:40 - 06:02:40 2107

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 00WT169, (2021/01/13 05:47UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.75 149
Alhena         06:37:42.8 +16:23:57  1.9  9.58 163
3 Gem          06:09:44.0 +23:06:48  5.5  0.53 158
PPM 095439     06:07:46.8 +22:42:28  8.3  0.16 158
00WT169        06:07:41.7 +22:52:08 15.4       158
Positions are for J2000

Event circumstances last updated at 2019/01/29 03:57:45 UT

Marc W. Buie, Southwest Research Institute

RECON