RECON: TNO occultation with 03WA191

Event between 03WA191 and star GA1080:01921782 with event index number of 243381

Geocentric closest approach at 2020/02/05 07:54:14 UTC

J2000 position of star is 06:22:29.1 +18:44:38
Equinox of date position of star is 06:23:35.4 +18:44:00
Stellar brightness G=17.0, use SENSEUP=128
Star is 12 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 32.3 AU from the Sun and 31.6 AU from the Earth.
The TNO is moving 17.6 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 2173 seconds.
The 1-sigma cross-track error in the shadow position is 4251 km.
The sky-plane scale is 22891.7 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=133.0 km assuming a 5% albedo -- 7.5 sec chord
Diameter=54.3 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 03WA191, (2020/02/05 07:54UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:15.6 +07:24:33  0.4 13.14  16
Alhena         06:38:52.4 +16:22:50  1.9  4.32  16
PPM 122270     06:20:11.9 +17:18:56  6.1  1.64  12
PPM 122361     06:23:40.5 +18:48:48  8.5  0.08  12
03WA191        06:23:39.9 +18:43:58 17.0        12
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 18.7 km RECON observability=1.0 and success probability=7.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:52:18 -55.9 Dark Up 46.6 238.0 Up 07:37:18 - 08:07:18 4698
Summerland 07:52:19 -55.9 Dark Up 46.8 237.7 Up 07:37:19 - 08:07:19 4687
Penticton 07:52:18 -56.3 Dark Up 46.9 238.2 Up 07:37:18 - 08:07:18 4665
Okanagan Falls 07:52:17 -56.5 Dark Up 47.0 238.3 Up 07:37:17 - 08:07:17 4648
Oliver 07:52:17 -56.6 Dark Up 47.1 238.5 Up 07:37:17 - 08:07:17 4635
Anarchist Mountain Observatory 07:52:14 -56.8 Dark Up 47.0 238.9 Up 07:37:14 - 08:07:14 4625
Oroville 07:52:15 -56.9 Dark Up 47.1 238.9 Up 07:37:15 - 08:07:15 4617
Tonasket 07:52:14 -57.1 Dark Up 47.2 239.1 Up 07:37:14 - 08:07:14 4598
Okanogan 07:52:13 -57.4 Dark Up 47.5 239.2 Up 07:37:13 - 08:07:13 4567
Brewster 07:52:13 -57.7 Dark Up 47.8 239.2 Up 07:37:13 - 08:07:13 4539
Manson/Chelan 07:52:13 -57.8 Dark Up 48.1 239.0 Up 07:37:13 - 08:07:13 4514
Entiat 07:52:14 -58.0 Dark Up 48.2 239.2 Up 07:37:14 - 08:07:14 4493
Wenatchee 07:52:12 -58.3 Dark Up 48.4 239.3 Up 07:37:12 - 08:07:12 4469
Ellensburg 07:52:12 -58.7 Dark Up 48.8 239.4 Up 07:37:12 - 08:07:12 4429
Pasco 07:52:04 -59.6 Dark Up 48.3 241.7 Up 07:37:04 - 08:07:04 4397
Yakima 07:52:11 -59.1 Dark Up 49.0 239.8 Up 07:37:11 - 08:07:11 4394
PNWRO 07:52:03 -59.8 Dark Up 48.3 242.2 Up 07:37:03 - 08:07:03 4381
Toppenish/White Swan 07:52:09 -59.3 Dark Up 49.0 240.2 Up 07:37:09 - 08:07:09 4379
George/Umatilla 07:52:05 -59.9 Dark Up 48.6 241.8 Up 07:37:05 - 08:07:05 4363
Goldendale 07:52:09 -59.8 Dark Up 49.5 240.3 Up 07:37:09 - 08:07:09 4321
The Dalles 07:52:09 -59.9 Dark Up 49.9 240.1 Up 07:37:09 - 08:07:09 4293
Maupin 07:52:07 -60.4 Dark Up 50.0 240.7 Up 07:37:07 - 08:07:07 4259
Niwot 07:51:00 -64.7 Dark Up 40.8 260.1 Up 07:36:00 - 08:06:00 4220
Madras/Culver 07:52:07 -60.9 Dark Up 50.3 241.2 Up 07:37:07 - 08:07:07 4210
Redmond 07:52:05 -61.2 Dark Up 50.5 241.5 Up 07:37:05 - 08:07:05 4177
Sisters 07:52:06 -61.1 Dark Up 50.7 241.0 Up 07:37:06 - 08:07:06 4169
Bend 07:52:05 -61.4 Dark Up 50.7 241.6 Up 07:37:05 - 08:07:05 4154
Oregon Observatory 07:52:04 -61.6 Dark Up 50.9 241.6 Up 07:37:04 - 08:07:04 4136
La Pine/Gilchrist 07:52:05 -61.7 Dark Up 51.0 241.8 Up 07:37:05 - 08:07:05 4116
North Lake 07:52:00 -62.3 Dark Up 50.8 242.9 Up 07:37:00 - 08:07:00 4091
Paisley 07:51:57 -62.9 Dark Up 50.8 243.9 Up 07:36:57 - 08:06:57 4050
Lakeview 07:51:55 -63.4 Dark Up 50.9 244.6 Up 07:36:55 - 08:06:55 4008
Chiloquin 07:52:02 -62.7 Dark Up 51.8 242.6 Up 07:37:02 - 08:07:02 4007
Klamath Falls 07:52:01 -63.1 Dark Up 51.9 243.1 Up 07:37:01 - 08:07:01 3978
Tulelake 07:51:59 -63.4 Dark Up 51.8 243.7 Up 07:36:59 - 08:06:59 3960
Cedarville 07:51:53 -64.1 Dark Up 51.1 245.5 Up 07:36:53 - 08:06:53 3953
Fall River/Burney 07:51:56 -64.3 Dark Up 52.1 244.8 Up 07:36:56 - 08:06:56 3879
Susanville 07:51:51 -65.1 Dark Up 51.9 246.3 Up 07:36:51 - 08:06:51 3839
Gimple 07:51:52 -65.3 Dark Up 52.2 246.4 Up 07:36:52 - 08:06:52 3808
Greenville 07:51:52 -65.3 Dark Up 52.2 246.3 Up 07:36:52 - 08:06:52 3806
Portola 07:51:48 -65.7 Dark Up 52.0 247.2 Up 07:36:48 - 08:06:48 3787
Quincy 07:51:50 -65.5 Dark Up 52.3 246.6 Up 07:36:50 - 08:06:50 3787
Reno 07:51:45 -66.0 Dark Up 51.7 248.1 Up 07:36:45 - 08:06:45 3779
Carson City 07:51:44 -66.4 Dark Up 51.8 248.6 Up 07:36:44 - 08:06:44 3746
Yerington 07:51:41 -66.7 Dark Up 51.4 249.4 Up 07:36:41 - 08:06:41 3744
Gardnerville 07:51:43 -66.6 Dark Up 51.8 248.9 Up 07:36:43 - 08:06:43 3724
Hawthorne 07:51:38 -67.2 Dark Up 51.2 250.5 Up 07:36:38 - 08:06:38 3714
Tonopah 07:51:31 -67.9 Dark Up 50.3 252.3 Up 07:36:31 - 08:06:31 3707
Lee Vining 07:51:38 -67.7 Dark Up 51.7 250.7 Up 07:36:38 - 08:06:38 3648
Bishop 07:51:33 -68.4 Dark Up 51.4 252.0 Up 07:36:33 - 08:06:33 3611
Beatty 07:51:26 -69.0 Dark Up 50.3 254.0 Up 07:36:26 - 08:06:26 3611
Indian Springs 07:51:21 -69.4 Dark Up 49.6 255.3 Up 07:36:21 - 08:06:21 3609
Henderson 07:51:16 -70.0 Dark Up 49.2 256.5 Up 07:36:16 - 08:06:16 3578
Patrick 07:51:11 -70.6 Dark Up 48.4 258.0 Up 07:36:11 - 08:06:11 3550
Lone Pine 07:51:30 -69.2 Dark Up 51.4 253.2 Up 07:36:30 - 08:06:30 3548
DCO 07:51:07 -70.9 Dark Up 47.9 258.9 Up 07:36:07 - 08:06:07 3541
Searchlight/Boulder City 07:51:15 -70.6 Dark Up 49.3 257.1 Up 07:36:15 - 08:06:15 3525
Kingman/Dolan Springs 07:51:11 -70.9 Dark Up 48.6 258.1 Up 07:36:11 - 08:06:11 3523
Laughlin/Bullhead City 07:51:13 -70.9 Dark Up 49.1 257.7 Up 07:36:13 - 08:06:13 3507
Mohave Valley 07:51:12 -71.2 Dark Up 49.1 258.1 Up 07:36:12 - 08:06:12 3481
Lake Havasu City 07:51:09 -71.6 Dark Up 49.0 258.7 Up 07:36:09 - 08:06:09 3450
Parker 07:51:08 -71.9 Dark Up 49.0 259.1 Up 07:36:08 - 08:06:08 3417
Blythe 07:51:08 -72.4 Dark Up 49.4 259.5 Up 07:36:08 - 08:06:08 3358
CPSLO 07:51:36 -70.0 Dark Up 53.8 252.5 Up 07:36:36 - 08:06:36 3354
Idyllwild 07:51:16 -72.2 Dark Up 51.1 257.8 Up 07:36:16 - 08:06:16 3309
Wildwood 07:51:24 -71.6 Dark Up 52.5 255.8 Up 07:36:24 - 08:06:24 3292
Calipatria 07:51:10 -72.9 Dark Up 50.2 259.4 Up 07:36:10 - 08:06:10 3284
Yuma 07:51:05 -73.4 Dark Up 49.6 260.5 Up 07:36:05 - 08:06:05 3268

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 03WA191, (2020/02/05 07:54UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 13.14  16
Alhena         06:37:42.8 +16:23:57  1.9  4.32  16
PPM 122270     06:19:01.8 +17:19:31  6.1  1.64  12
PPM 122361     06:22:29.6 +18:49:29  8.5  0.08  12
03WA191        06:22:29.1 +18:44:38 17.0        12
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:53:26 UT

Marc W. Buie, Southwest Research Institute

RECON