RECON: TNO occultation with 03UT292

Event between 03UT292 and star UC4-490-015768 with event index number of 243371

Geocentric closest approach at 2020/01/31 08:44:01 UTC

J2000 position of star is 05:53:22.7 +07:54:12
Equinox of date position of star is 05:54:21.9 +07:54:22
Stellar brightness R=14.8, use SENSEUP=128
Star is 66 degrees from the moon. Moon is 34% illuminated.
TNO apparent brightness V=21.5

[RECON map]
TNO is 27.9 AU from the Sun and 27.2 AU from the Earth.
The TNO is moving 16.8 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 663 seconds.
The 1-sigma cross-track error in the shadow position is 4643 km.
The sky-plane scale is 19741.6 km/arcsec.

The TNO has an absolute magnitude Hv=6.9
Diameter=252.4 km assuming a 5% albedo -- 15.0 sec chord
Diameter=103.0 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 03UT292, (2020/01/31 08:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:15.6 +07:24:33  0.4  0.67  66
Bellatrix      05:26:12.6 +06:21:59  1.6  7.18  59
52 Ori         05:49:04.9 +06:27:35  5.5  1.97  64
PPM 149627     05:55:34.3 +08:03:24  7.2  0.31  66
PPM 149617     05:55:09.0 +07:42:57  9.5  0.25  66
03UT292        05:54:28.2 +07:54:23 14.8        66
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 1.4 sigma about the mid-time.
The median site spacing is 15.2 km RECON observability=1.0 and success probability=5.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 08:41:53 -57.9 Dark Down 29.8 245.3 Low 08:26:53 - 08:56:53 3283
Tonasket 08:41:52 -58.2 Dark Down 29.9 245.5 Low 08:26:52 - 08:56:52 3269
Okanogan 08:41:50 -58.5 Dark Down 30.2 245.5 Up 08:26:50 - 08:56:50 3245
Brewster 08:41:50 -58.8 Dark Down 30.4 245.5 Up 08:26:50 - 08:56:50 3224
Manson/Chelan 08:41:50 -59.1 Dark Down 30.7 245.2 Up 08:26:50 - 08:56:50 3204
Entiat 08:41:49 -59.3 Dark Down 30.9 245.3 Up 08:26:49 - 08:56:49 3189
Wenatchee 08:41:48 -59.6 Dark Down 31.0 245.3 Up 08:26:48 - 08:56:48 3171
Ellensburg 08:41:46 -60.0 Dark Down 31.3 245.4 Up 08:26:46 - 08:56:46 3141
Pasco 08:41:39 -60.5 Dark Down 30.8 247.0 Up 08:26:39 - 08:56:39 3121
Yakima 08:41:45 -60.4 Dark Down 31.5 245.6 Up 08:26:45 - 08:56:45 3114
PNWRO 08:41:38 -60.7 Dark Down 30.7 247.3 Up 08:26:38 - 08:56:38 3109
Toppenish/White Swan 08:41:43 -60.6 Dark Down 31.5 245.8 Up 08:26:43 - 08:56:43 3104
George/Umatilla 08:41:38 -60.9 Dark Down 31.0 247.0 Up 08:26:38 - 08:56:38 3095
Goldendale 08:41:42 -61.2 Dark Down 32.0 245.8 Up 08:26:42 - 08:56:42 3059
The Dalles 08:41:42 -61.5 Dark Down 32.3 245.5 Up 08:26:42 - 08:56:42 3037
Maupin 08:41:40 -61.9 Dark Down 32.5 245.9 Up 08:26:40 - 08:56:40 3011
Niwot 08:40:39 -60.6 Dark Down 22.8 260.8 Low 08:25:39 - 08:55:39 2981
Madras/Culver 08:41:37 -62.4 Dark Down 32.7 246.2 Up 08:26:37 - 08:56:37 2973
Redmond 08:41:35 -62.8 Dark Down 32.9 246.3 Up 08:26:35 - 08:56:35 2948
Sisters 08:41:37 -62.8 Dark Down 33.1 245.9 Up 08:26:37 - 08:56:37 2941
Bend 08:41:35 -63.0 Dark Down 33.1 246.3 Up 08:26:35 - 08:56:35 2930
Oregon Observatory 08:41:34 -63.2 Dark Down 33.2 246.3 Up 08:26:34 - 08:56:34 2916
La Pine/Gilchrist 08:41:34 -63.4 Dark Down 33.4 246.4 Up 08:26:34 - 08:56:34 2900
North Lake 08:41:30 -63.7 Dark Down 33.1 247.1 Up 08:26:30 - 08:56:30 2883
Paisley 08:41:26 -64.2 Dark Down 33.1 247.8 Up 08:26:26 - 08:56:26 2852
Lakeview 08:41:23 -64.7 Dark Down 33.2 248.2 Up 08:26:23 - 08:56:23 2820
Chiloquin 08:41:29 -64.5 Dark Down 34.0 246.7 Up 08:26:29 - 08:56:29 2815
Klamath Falls 08:41:27 -64.9 Dark Down 34.1 247.0 Up 08:26:27 - 08:56:27 2792
Tulelake 08:41:26 -65.1 Dark Down 34.0 247.4 Up 08:26:26 - 08:56:26 2779
Cedarville 08:41:20 -65.3 Dark Down 33.3 248.8 Up 08:26:20 - 08:56:20 2777
Fall River/Burney 08:41:21 -66.0 Dark Down 34.3 248.0 Up 08:26:21 - 08:56:21 2715
Susanville 08:41:16 -66.4 Dark Down 34.1 249.0 Up 08:26:16 - 08:56:16 2685
Gimple 08:41:16 -66.7 Dark Down 34.3 249.0 Up 08:26:16 - 08:56:16 2660
Greenville 08:41:16 -66.8 Dark Down 34.4 249.0 Up 08:26:16 - 08:56:16 2659
Portola 08:41:13 -67.0 Dark Down 34.1 249.6 Up 08:26:13 - 08:56:13 2645
Quincy 08:41:15 -67.0 Dark Down 34.4 249.1 Up 08:26:15 - 08:56:15 2644
Reno 08:41:11 -67.1 Dark Down 33.8 250.3 Up 08:26:11 - 08:56:11 2639
Carson City 08:41:08 -67.4 Dark Down 33.9 250.5 Up 08:26:08 - 08:56:08 2613
Yerington 08:41:05 -67.5 Dark Down 33.5 251.1 Up 08:26:05 - 08:56:05 2613
Gardnerville 08:41:07 -67.6 Dark Down 33.9 250.7 Up 08:26:07 - 08:56:07 2596
Hawthorne 08:41:02 -67.7 Dark Down 33.3 251.8 Up 08:26:02 - 08:56:02 2589
Tonopah 08:40:55 -67.7 Dark Down 32.4 253.2 Up 08:25:55 - 08:55:55 2585
Lee Vining 08:41:01 -68.4 Dark Down 33.8 251.8 Up 08:26:01 - 08:56:01 2536
Beatty 08:40:49 -68.6 Dark Down 32.4 254.2 Up 08:25:49 - 08:55:49 2507
Bishop 08:40:56 -68.8 Dark Down 33.5 252.7 Up 08:25:56 - 08:55:56 2506
Indian Springs 08:40:45 -68.5 Dark Down 31.6 255.2 Up 08:25:45 - 08:55:45 2506
Henderson 08:40:41 -68.7 Dark Down 31.2 256.0 Up 08:25:41 - 08:55:41 2480
Patrick 08:40:35 -68.7 Dark Down 30.5 257.1 Up 08:25:35 - 08:55:35 2456
Lone Pine 08:40:51 -69.4 Dark Down 33.4 253.4 Up 08:25:51 - 08:55:51 2455
DCO 08:40:32 -68.6 Dark Down 30.0 257.8 Up 08:25:32 - 08:55:32 2448
Searchlight/Boulder City 08:40:38 -69.1 Dark Down 31.3 256.4 Up 08:25:38 - 08:55:38 2437
Kingman/Dolan Springs 08:40:34 -69.0 Dark Down 30.7 257.1 Up 08:25:34 - 08:55:34 2434
Laughlin/Bullhead City 08:40:36 -69.2 Dark Down 31.1 256.8 Up 08:25:36 - 08:55:36 2421
Mohave Valley 08:40:34 -69.5 Dark Down 31.2 256.9 Up 08:25:34 - 08:55:34 2400
Lake Havasu City 08:40:32 -69.7 Dark Down 31.1 257.3 Up 08:25:32 - 08:55:32 2374
Parker 08:40:30 -69.9 Dark Down 31.1 257.5 Up 08:25:30 - 08:55:30 2346
Blythe 08:40:29 -70.5 Dark Down 31.5 257.7 Up 08:25:29 - 08:55:29 2297
CPSLO 08:40:54 -71.3 Dark Down 35.8 252.3 Up 08:25:54 - 08:55:54 2293
Idyllwild 08:40:35 -71.4 Dark Down 33.2 256.2 Up 08:25:35 - 08:55:35 2258
Wildwood 08:40:42 -71.8 Dark Down 34.6 254.6 Up 08:25:42 - 08:55:42 2243
Calipatria 08:40:29 -71.4 Dark Down 32.4 257.3 Up 08:25:29 - 08:55:29 2236
Yuma 08:40:25 -71.3 Dark Down 31.7 258.2 Up 08:25:25 - 08:55:25 2221

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 03UT292, (2020/01/31 08:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  0.67  66
Bellatrix      05:25:07.8 +06:20:58  1.6  7.18  59
52 Ori         05:48:00.2 +06:27:15  5.5  1.97  64
PPM 149627     05:54:28.7 +08:03:15  7.2  0.31  66
PPM 149617     05:54:03.6 +07:42:48  9.5  0.25  66
03UT292        05:53:22.7 +07:54:12 14.8        66
Positions are for J2000

Event circumstances last updated at 2018/02/28 17:50:15 UT

Marc W. Buie, Southwest Research Institute

RECON