RECON: TNO occultation with 523776

Event between (523776) 14YB50 and star GA1200:03287234 with event index number of 1841964

Geocentric closest approach at 2028/02/15 04:41:30 UTC

J2000 position of star is 09:29:02.1 +31:42:12
Equinox of date position of star is 09:30:16.7 +31:36:41
Stellar brightness G=15.0, use SENSEUP=128
Star is 77 degrees from the moon. Moon is 73% illuminated.
TNO apparent brightness V=25.8

[RECON map]
TNO is 37.7 AU from the Sun and 36.7 AU from the Earth.
The TNO is moving 25.0 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 252 seconds.
The 1-sigma cross-track error in the shadow position is 2503 km.
The sky-plane scale is 26635.2 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=366.5 km assuming a 5% albedo -- 2.4 sec chord
Diameter=149.6 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523776, (2028/02/15 04:42UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:52.1 +11:49:43  1.3 21.72  60
40Alp Lyn      09:22:45.8 +34:16:19  3.1  3.17  80
PPM 074550     09:31:43.1 +31:54:59  8.4  0.40  77
PPM 074526     09:29:34.9 +31:20:29  9.3  0.34  77
523776         09:30:42.7 +31:34:45 15.0        77
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 3.6 sigma about the mid-time.
The median site spacing is 26.7 km RECON observability=1.0 and success probability=17.9%
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 04:43:59 -33.8 Dark Down 51.5 101.1 Up 04:28:59 - 04:58:59 3227
Kelowna 04:43:59 -33.8 Dark Down 51.5 100.5 Up 04:28:59 - 04:58:59 3186
Peachland 04:44:00 -33.7 Dark Down 51.3 100.1 Up 04:29:00 - 04:59:00 3177
Summerland 04:44:00 -33.8 Dark Down 51.4 100.0 Up 04:29:00 - 04:59:00 3160
Penticton 04:44:00 -33.9 Dark Down 51.5 100.0 Up 04:29:00 - 04:59:00 3152
Oliver 04:44:01 -34.0 Dark Down 51.6 99.5 Up 04:29:01 - 04:59:01 3114
Anarchist Mountain Observatory 04:44:00 -34.2 Dark Down 51.7 99.5 Up 04:29:00 - 04:59:00 3094
Victoria 04:44:10 -31.9 Dark Down 49.2 95.5 Up 04:29:10 - 04:59:10 3080
Tonasket 04:44:01 -34.3 Dark Down 51.7 99.1 Up 04:29:01 - 04:59:01 3061
Okanogan 04:44:02 -34.3 Dark Down 51.7 98.5 Up 04:29:02 - 04:59:02 3026
Brewster 04:44:03 -34.3 Dark Down 51.6 98.0 Up 04:29:03 - 04:59:03 2998
Manson/Chelan 04:44:04 -34.2 Dark Down 51.4 97.4 Up 04:29:04 - 04:59:04 2979
Entiat 04:44:04 -34.2 Dark Down 51.4 97.1 Up 04:29:04 - 04:59:04 2956
Wenatchee 04:44:04 -34.2 Dark Down 51.3 96.7 Up 04:29:04 - 04:59:04 2929
Ellensburg 04:44:05 -34.2 Dark Down 51.2 96.0 Up 04:29:05 - 04:59:05 2886
Yakima 04:44:05 -34.3 Dark Down 51.3 95.5 Up 04:29:05 - 04:59:05 2842
Toppenish/White Swan 04:44:05 -34.5 Dark Down 51.4 95.4 Up 04:29:05 - 04:59:05 2817
Pasco 04:44:02 -35.4 Dark Down 52.3 96.2 Up 04:29:02 - 04:59:02 2793
PNWRO 04:44:01 -35.6 Dark Down 52.5 96.1 Up 04:29:01 - 04:59:01 2764
Goldendale 04:44:07 -34.4 Dark Down 51.2 94.3 Up 04:29:07 - 04:59:07 2761
The Dalles 04:44:08 -34.3 Dark Down 50.9 93.8 Up 04:29:08 - 04:59:08 2740
Maupin 04:44:08 -34.5 Dark Down 51.0 93.3 Up 04:29:08 - 04:59:08 2694
Sisters 04:44:10 -34.4 Dark Down 50.7 91.9 Up 04:29:10 - 04:59:10 2603
Redmond 04:44:09 -34.7 Dark Down 51.0 92.2 Up 04:29:09 - 04:59:09 2596
Bend 04:44:10 -34.6 Dark Down 50.9 91.8 Up 04:29:10 - 04:59:10 2574
Oregon Observatory 04:44:10 -34.6 Dark Down 50.8 91.5 Up 04:29:10 - 04:59:10 2557
La Pine/Gilchrist 04:44:10 -34.6 Dark Down 50.8 91.2 Up 04:29:10 - 04:59:10 2535
North Lake 04:44:09 -35.2 Dark Down 51.2 91.1 Up 04:29:09 - 04:59:09 2481
Paisley 04:44:08 -35.6 Dark Down 51.5 90.6 Up 04:29:08 - 04:59:08 2417
Klamath Falls 04:44:12 -34.8 Dark Down 50.6 89.2 Up 04:29:12 - 04:59:12 2379
Lakeview 04:44:09 -35.8 Dark Down 51.6 90.1 Up 04:29:09 - 04:59:09 2359
Cedarville 04:44:09 -36.2 Dark Down 51.8 89.4 Up 04:29:09 - 04:59:09 2285
Fall River/Burney 04:44:12 -35.4 Dark Down 50.8 88.0 Up 04:29:12 - 04:59:12 2245
Susanville 04:44:10 -36.1 Dark Down 51.4 87.7 Up 04:29:10 - 04:59:10 2168
Greenville 04:44:11 -36.0 Dark Down 51.1 87.2 Up 04:29:11 - 04:59:11 2141
Gimple 04:44:11 -36.0 Dark Down 51.2 87.2 Up 04:29:11 - 04:59:11 2140
Quincy 04:44:12 -36.0 Dark Down 51.1 86.9 Up 04:29:12 - 04:59:12 2118
Portola 04:44:10 -36.4 Dark Down 51.5 87.1 Up 04:29:10 - 04:59:10 2099
Niwot 04:43:27 -47.1 Dark Down 63.1 98.1 Up 04:28:27 - 04:58:27 2075
Reno 04:44:09 -37.0 Dark Down 52.0 87.1 Up 04:29:09 - 04:59:09 2064
SwRI 04:43:27 -47.1 Dark Down 63.0 97.8 Up 04:28:27 - 04:58:27 2063
Carson City 04:44:08 -37.1 Dark Down 52.0 86.7 Up 04:29:08 - 04:59:08 2024
Gardnerville 04:44:09 -37.2 Dark Down 52.0 86.4 Up 04:29:09 - 04:59:09 1996
Yerington 04:44:07 -37.6 Dark Down 52.5 86.8 Up 04:29:07 - 04:59:07 1996
Hawthorne 04:44:06 -38.1 Dark Down 52.8 86.5 Up 04:29:06 - 04:59:06 1940
Lee Vining 04:44:08 -37.9 Dark Down 52.4 85.5 Up 04:29:08 - 04:59:08 1882
Tonopah 04:44:02 -39.3 Dark Down 53.9 86.6 Up 04:29:02 - 04:59:02 1876
Bishop 04:44:06 -38.6 Dark Down 52.9 85.1 Up 04:29:06 - 04:59:06 1809
Beatty 04:44:01 -39.9 Dark Down 54.2 85.3 Up 04:29:01 - 04:59:01 1745
Indian Springs 04:43:58 -40.9 Dark Down 55.0 85.3 Up 04:28:58 - 04:58:58 1701
Henderson 04:43:56 -41.5 Dark Down 55.5 84.9 Up 04:28:56 - 04:58:56 1638
CPSLO 04:44:13 -37.3 Dark Down 50.9 81.4 Up 04:29:13 - 04:59:13 1605
Searchlight/Boulder City 04:43:57 -41.7 Dark Down 55.5 84.1 Up 04:28:57 - 04:58:57 1574
Patrick 04:43:53 -42.6 Dark Down 56.3 84.5 Up 04:28:53 - 04:58:53 1562
Laughlin/Bullhead City 04:43:55 -42.1 Dark Down 55.8 83.8 Up 04:28:55 - 04:58:55 1539
Kingman/Dolan Springs 04:43:54 -42.5 Dark Down 56.2 84.1 Up 04:28:54 - 04:58:54 1538
DCO 04:43:51 -43.2 Dark Down 56.9 84.4 Up 04:28:51 - 04:58:51 1525
Mohave Valley 04:43:55 -42.2 Dark Down 55.7 83.4 Up 04:28:55 - 04:58:55 1509
Lake Havasu City 04:43:54 -42.5 Dark Down 55.9 83.0 Up 04:28:54 - 04:58:54 1463
Wildwood 04:44:07 -39.2 Dark Down 52.4 80.7 Up 04:29:07 - 04:59:07 1450
Parker 04:43:55 -42.6 Dark Down 55.9 82.5 Up 04:28:55 - 04:58:55 1424
Idyllwild 04:44:02 -40.8 Dark Down 53.8 81.0 Up 04:29:02 - 04:59:02 1394
Blythe 04:43:55 -42.5 Dark Down 55.5 81.6 Up 04:28:55 - 04:58:55 1367
George/Scottsdale 04:43:47 -44.6 Dark Down 57.8 82.8 Up 04:28:47 - 04:58:47 1366
Calipatria 04:43:58 -41.9 Dark Down 54.7 80.5 Up 04:28:58 - 04:58:58 1319
Yuma 04:43:56 -42.7 Dark Down 55.4 80.2 Up 04:28:56 - 04:58:56 1265

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 523776, (2028/02/15 04:42UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 21.72  60
40Alp Lyn      09:21:02.9 +34:23:34  3.1  3.17  80
PPM 074550     09:30:02.4 +32:02:28  8.4  0.40  77
PPM 074526     09:27:54.3 +31:27:54  9.3  0.34  77
523776         09:29:02.1 +31:42:12 15.0        77
Positions are for J2000

Event circumstances last updated at 2020/11/06 22:24:38 UT

Marc W. Buie, Southwest Research Institute

RECON