RECON: TNO occultation with 468861

Event between (468861) 13LU28 and star GA1440:04765004 with event index number of 1061631

Geocentric closest approach at 2021/03/16 06:31:37 UTC

J2000 position of star is 13:45:00.7 +54:31:33
Equinox of date position of star is 13:45:45.9 +54:25:31
Stellar brightness G=15.6, use SENSEUP=128
Star is 118 degrees from the moon. Moon is 8% illuminated.
TNO apparent brightness V=20.7

[RECON map]
TNO is 11.0 AU from the Sun and 10.4 AU from the Earth.
The TNO is moving 41.1 km/sec on the sky relative to the star, or, 19.6 arcsec/hr.
The 1-sigma error in the time of the event is 25 seconds.
The 1-sigma cross-track error in the shadow position is 1211 km.
The sky-plane scale is 7549.7 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=138.0 km assuming a 5% albedo -- 1.5 sec chord
Diameter=56.4 km assuming a 30% albedo -- 0.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 468861, (2021/03/16 06:32UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:39.4 +38:48:16  0.0 50.02  99
Mizar          13:24:46.5 +54:48:54  2.3  3.07 118
83 UMa         13:41:32.4 +54:34:30  4.7  0.64 118
PPM 034165     13:43:18.1 +55:37:17  7.7  1.25 117
PPM 034177     13:44:53.1 +54:23:45  9.2  0.14 118
468861         13:45:48.3 +54:25:12 15.6       118
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 25.1 km RECON observability=1.0 and success probability=10.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 06:32:54 -37.5 Dark Down 58.0 61.4 Up 06:30:20 - 06:35:28 -2071
Kelowna 06:32:54 -37.8 Dark Down 57.7 60.8 Up 06:30:20 - 06:35:28 -2111
Peachland 06:32:54 -37.8 Dark Down 57.5 60.6 Up 06:30:20 - 06:35:28 -2119
Summerland 06:32:55 -38.0 Dark Down 57.5 60.4 Up 06:30:21 - 06:35:29 -2136
Penticton 06:32:54 -38.1 Dark Down 57.5 60.3 Up 06:30:20 - 06:35:28 -2145
Oliver 06:32:54 -38.4 Dark Down 57.3 59.8 Up 06:30:20 - 06:35:28 -2182
Victoria 06:33:00 -37.6 Dark Down 54.8 58.0 Up 06:30:26 - 06:35:34 -2197
Anarchist Mountain Observatory 06:32:54 -38.6 Dark Down 57.4 59.7 Up 06:30:20 - 06:35:28 -2203
Tonasket 06:32:54 -38.8 Dark Down 57.2 59.2 Up 06:30:20 - 06:35:28 -2235
Okanogan 06:32:54 -39.1 Dark Down 56.9 58.7 Up 06:30:20 - 06:35:28 -2269
Brewster 06:32:55 -39.2 Dark Down 56.7 58.3 Up 06:30:21 - 06:35:29 -2296
Manson/Chelan 06:32:55 -39.3 Dark Down 56.3 58.0 Up 06:30:21 - 06:35:29 -2313
Entiat 06:32:55 -39.4 Dark Down 56.2 57.7 Up 06:30:21 - 06:35:29 -2335
Wenatchee 06:32:56 -39.6 Dark Down 56.0 57.4 Up 06:30:22 - 06:35:30 -2361
Ellensburg 06:32:56 -39.9 Dark Down 55.6 56.8 Up 06:30:22 - 06:35:30 -2402
Yakima 06:32:56 -40.2 Dark Down 55.4 56.3 Up 06:30:22 - 06:35:30 -2444
Toppenish/White Swan 06:32:56 -40.5 Dark Down 55.4 56.1 Up 06:30:22 - 06:35:30 -2470
Pasco 06:32:54 -41.0 Dark Down 56.0 56.1 Up 06:30:20 - 06:35:28 -2499
Goldendale 06:32:57 -40.8 Dark Down 54.8 55.4 Up 06:30:23 - 06:35:31 -2522
PNWRO 06:32:53 -41.3 Dark Down 56.0 55.9 Up 06:30:19 - 06:35:27 -2528
The Dalles 06:32:57 -40.8 Dark Down 54.5 55.0 Up 06:30:23 - 06:35:31 -2540
Maupin 06:32:57 -41.2 Dark Down 54.3 54.6 Up 06:30:23 - 06:35:31 -2585
Sisters 06:32:58 -41.7 Dark Down 53.5 53.5 Up 06:30:24 - 06:35:32 -2670
Redmond 06:32:57 -41.9 Dark Down 53.7 53.6 Up 06:30:23 - 06:35:31 -2678
Bend 06:32:57 -42.0 Dark Down 53.5 53.3 Up 06:30:23 - 06:35:31 -2699
Oregon Observatory 06:32:58 -42.1 Dark Down 53.3 53.1 Up 06:30:24 - 06:35:32 -2715
La Pine/Gilchrist 06:32:58 -42.3 Dark Down 53.2 52.9 Up 06:30:24 - 06:35:32 -2735
North Lake 06:32:57 -42.9 Dark Down 53.3 52.5 Up 06:30:23 - 06:35:31 -2789
Paisley 06:32:56 -43.5 Dark Down 53.1 51.9 Up 06:30:22 - 06:35:30 -2852
Klamath Falls 06:32:58 -43.3 Dark Down 52.1 51.4 Up 06:30:24 - 06:35:32 -2880
Lakeview 06:32:56 -44.0 Dark Down 52.9 51.4 Up 06:30:22 - 06:35:30 -2907
Cedarville 06:32:56 -44.6 Dark Down 52.6 50.8 Up 06:30:22 - 06:35:30 -2977
Fall River/Burney 06:32:58 -44.4 Dark Down 51.6 50.2 Up 06:30:24 - 06:35:32 -3007
Susanville 06:32:56 -45.3 Dark Down 51.6 49.6 Up 06:30:22 - 06:35:30 -3084
Greenville 06:32:57 -45.4 Dark Down 51.3 49.4 Up 06:30:23 - 06:35:31 -3107
Gimple 06:32:57 -45.4 Dark Down 51.3 49.4 Up 06:30:23 - 06:35:31 -3108
Quincy 06:32:57 -45.5 Dark Down 51.1 49.2 Up 06:30:23 - 06:35:31 -3127
Portola 06:32:56 -45.9 Dark Down 51.3 49.1 Up 06:30:22 - 06:35:30 -3148
Reno 06:32:55 -46.4 Dark Down 51.5 48.8 Up 06:30:21 - 06:35:29 -3185
Niwot 06:32:28 -50.6 Dark Down 60.3 47.8 Up 06:29:54 - 06:35:02 -3204
SwRI 06:32:28 -50.7 Dark Down 60.2 47.6 Up 06:29:54 - 06:35:02 -3215
Carson City 06:32:55 -46.7 Dark Down 51.3 48.5 Up 06:30:21 - 06:35:29 -3221
Gardnerville 06:32:54 -46.9 Dark Down 51.2 48.2 Up 06:30:20 - 06:35:28 -3247
Yerington 06:32:54 -47.1 Dark Down 51.5 48.3 Up 06:30:20 - 06:35:28 -3250
Hawthorne 06:32:52 -47.7 Dark Down 51.5 47.8 Up 06:30:18 - 06:35:26 -3304
Lee Vining 06:32:53 -48.0 Dark Down 50.9 47.3 Up 06:30:19 - 06:35:27 -3354
Tonopah 06:32:50 -48.7 Dark Down 52.0 47.3 Up 06:30:16 - 06:35:24 -3369
Bishop 06:32:52 -48.8 Dark Down 50.9 46.8 Up 06:30:18 - 06:35:26 -3424
Beatty 06:32:49 -49.9 Dark Down 51.5 46.2 Up 06:30:15 - 06:35:23 -3490
Indian Springs 06:32:47 -50.6 Dark Down 51.9 45.8 Up 06:30:13 - 06:35:21 -3534
CPSLO 06:32:56 -49.3 Dark Down 48.2 45.2 Up 06:30:22 - 06:35:30 -3592
Henderson 06:32:45 -51.4 Dark Down 51.9 45.2 Up 06:30:11 - 06:35:19 -3593
Searchlight/Boulder City 06:32:45 -51.9 Dark Down 51.6 44.7 Up 06:30:11 - 06:35:19 -3651
Patrick 06:32:42 -52.4 Dark Down 52.1 44.5 Up 06:30:08 - 06:35:16 -3665
Laughlin/Bullhead City 06:32:44 -52.3 Dark Down 51.5 44.4 Up 06:30:10 - 06:35:18 -3683
Kingman/Dolan Springs 06:32:43 -52.5 Dark Down 51.8 44.3 Up 06:30:09 - 06:35:17 -3685
DCO 06:32:41 -52.9 Dark Down 52.3 44.1 Up 06:30:07 - 06:35:15 -3700
Mohave Valley 06:32:44 -52.5 Dark Down 51.3 44.1 Up 06:30:10 - 06:35:18 -3710
Wildwood 06:32:51 -51.3 Dark Down 48.5 44.0 Up 06:30:17 - 06:35:25 -3742
Lake Havasu City 06:32:43 -53.0 Dark Down 51.2 43.8 Up 06:30:09 - 06:35:17 -3751
Parker 06:32:43 -53.3 Dark Down 51.0 43.5 Up 06:30:09 - 06:35:17 -3786
Idyllwild 06:32:48 -52.5 Dark Down 49.3 43.5 Up 06:30:14 - 06:35:22 -3802
Blythe 06:32:43 -53.6 Dark Down 50.4 43.1 Up 06:30:09 - 06:35:17 -3834
George/Scottsdale 06:32:38 -54.7 Dark Down 52.0 42.6 Up 06:30:04 - 06:35:12 -3843
Calipatria 06:32:45 -53.6 Dark Down 49.5 42.8 Up 06:30:11 - 06:35:19 -3873
Yuma 06:32:43 -54.4 Dark Down 49.7 42.3 Up 06:30:09 - 06:35:17 -3923

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 468861, (2021/03/16 06:32UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 50.02  99
Mizar          13:23:55.8 +54:55:31  2.3  3.07 118
83 UMa         13:40:44.2 +54:40:54  4.7  0.64 118
PPM 034165     13:42:30.9 +55:43:40  7.7  1.25 117
PPM 034177     13:44:05.4 +54:30:07  9.2  0.14 118
468861         13:45:00.7 +54:31:33 15.6       118
Positions are for J2000

Event circumstances last updated at 2020/03/01 22:27:12 UT

Marc W. Buie, Southwest Research Institute

RECON