RECON: TNO occultation with 14YY49

Event between 14YY49 and star UC4-463-030506 with event index number of 321906

Geocentric closest approach at 2020/04/12 04:58:24 UTC

J2000 position of star is 07:14:10.7 +02:24:56
Equinox of date position of star is 07:15:09.6 +02:22:55
Stellar brightness R=13.5, use SENSEUP=32
Star is 145 degrees from the moon. Moon is 78% illuminated.
TNO apparent brightness V=23.3

[RECON map]
TNO is 19.7 AU from the Sun and 19.7 AU from the Earth.
The TNO is moving 13.1 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 189 seconds.
The 1-sigma cross-track error in the shadow position is 2987 km.
The sky-plane scale is 14303.9 km/arcsec.

The TNO has an absolute magnitude Hv=10.1
Diameter=58.3 km assuming a 5% albedo -- 4.5 sec chord
Diameter=23.8 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 14YY49, (2020/04/12 04:58UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:16.2 +07:24:33  0.4 20.30 162
Alhena         06:38:53.0 +16:22:49  1.9 16.61 159
PPM 152385     07:20:25.9 +02:42:07  5.9  1.34 144
PPM 152304     07:17:57.3 +02:42:10  8.3  0.75 144
PPM 152250     07:16:25.9 +02:02:16  9.6  0.45 144
PPM 152146     07:13:31.7 +02:28:39 10.8  0.44 145
14YY49         07:15:14.2 +02:22:45 13.5       144
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 4.8 sigma about the mid-time.
The median site spacing is 22.9 km RECON observability=1.0 and success probability=16.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 05:05:26 -20.1 Dark Down 27.1 237.8 Low 04:50:26 - 05:20:26 -1018
Kelowna 05:05:28 -20.3 Dark Down 26.9 238.1 Low 04:50:28 - 05:20:28 -1026
Penticton 05:05:27 -20.4 Dark Down 27.2 238.1 Low 04:50:27 - 05:20:27 -1055
Okanagan Falls 05:05:26 -20.5 Dark Down 27.3 238.2 Low 04:50:26 - 05:20:26 -1073
Oliver 05:05:27 -20.7 Dark Down 27.3 238.3 Low 04:50:27 - 05:20:27 -1090
Anarchist Mountain Observatory 05:05:27 -20.9 Dark Down 27.3 238.5 Low 04:50:27 - 05:20:27 -1113
Oroville 05:05:27 -20.9 Dark Down 27.4 238.5 Low 04:50:27 - 05:20:27 -1118
Tonasket 05:05:26 -21.1 Dark Down 27.5 238.6 Low 04:50:26 - 05:20:26 -1141
Okanogan 05:05:26 -21.2 Dark Down 27.8 238.6 Low 04:50:26 - 05:20:26 -1169
Brewster 05:05:25 -21.3 Dark Down 28.0 238.5 Low 04:50:25 - 05:20:25 -1188
Manson/Chelan 05:05:24 -21.3 Dark Down 28.4 238.3 Low 04:50:24 - 05:20:24 -1196
Entiat 05:05:23 -21.4 Dark Down 28.5 238.3 Low 04:50:23 - 05:20:23 -1215
Wenatchee 05:05:22 -21.5 Dark Down 28.7 238.3 Low 04:50:22 - 05:20:22 -1237
Ellensburg 05:05:21 -21.7 Dark Down 29.1 238.3 Low 04:50:21 - 05:20:21 -1269
Yakima 05:05:21 -21.9 Dark Down 29.3 238.5 Low 04:50:21 - 05:20:21 -1308
Toppenish/White Swan 05:05:22 -22.2 Dark Down 29.3 238.8 Low 04:50:22 - 05:20:22 -1335
Goldendale 05:05:19 -22.3 Dark Down 29.8 238.6 Low 04:50:19 - 05:20:19 -1374
The Dalles 05:05:18 -22.2 Dark Down 30.2 238.4 Up 04:50:18 - 05:20:18 -1383
Pasco 05:05:25 -22.9 Dark Down 28.6 240.0 Low 04:50:25 - 05:20:25 -1392
George/Umatilla 05:05:24 -23.0 Dark Down 28.9 240.0 Low 04:50:24 - 05:20:24 -1417
PNWRO 05:05:25 -23.2 Dark Down 28.6 240.3 Low 04:50:25 - 05:20:25 -1424
Maupin 05:05:18 -22.6 Dark Down 30.3 238.7 Up 04:50:18 - 05:20:18 -1427
Madras/Culver 05:05:17 -22.9 Dark Down 30.7 238.9 Up 04:50:17 - 05:20:17 -1479
Sisters 05:05:15 -22.9 Dark Down 31.1 238.7 Up 04:50:15 - 05:20:15 -1495
Redmond 05:05:16 -23.1 Dark Down 30.9 239.1 Up 04:50:16 - 05:20:16 -1512
Bend 05:05:15 -23.2 Dark Down 31.1 239.0 Up 04:50:15 - 05:20:15 -1528
Oregon Observatory 05:05:15 -23.2 Dark Down 31.2 239.0 Up 04:50:15 - 05:20:15 -1540
La Pine/Gilchrist 05:05:13 -23.3 Dark Down 31.4 239.0 Up 04:50:13 - 05:20:13 -1558
North Lake 05:05:16 -23.9 Dark Down 31.2 239.8 Up 04:50:16 - 05:20:16 -1623
Chiloquin 05:05:11 -23.8 Dark Down 32.2 239.3 Up 04:50:11 - 05:20:11 -1652
Klamath Falls 05:05:10 -24.1 Dark Down 32.3 239.6 Up 04:50:10 - 05:20:10 -1689
Paisley 05:05:16 -24.5 Dark Down 31.3 240.5 Up 04:50:16 - 05:20:16 -1691
Tulelake 05:05:11 -24.4 Dark Down 32.2 240.0 Up 04:50:11 - 05:20:11 -1727
Lakeview 05:05:15 -24.9 Dark Down 31.4 240.9 Up 04:50:15 - 05:20:15 -1748
Fall River/Burney 05:05:10 -25.0 Dark Down 32.6 240.6 Up 04:50:10 - 05:20:10 -1819
Cedarville 05:05:15 -25.4 Dark Down 31.6 241.4 Up 04:50:15 - 05:20:15 -1819
Susanville 05:05:11 -25.9 Dark Down 32.5 241.6 Up 04:50:11 - 05:20:11 -1910
Greenville 05:05:09 -25.9 Dark Down 32.8 241.5 Up 04:50:09 - 05:20:09 -1926
Gimple 05:05:11 -25.9 Dark Down 32.7 241.5 Up 04:50:11 - 05:20:11 -1929
Quincy 05:05:09 -26.0 Dark Down 32.9 241.6 Up 04:50:09 - 05:20:09 -1946
Portola 05:05:11 -26.4 Dark Down 32.6 242.1 Up 04:50:11 - 05:20:11 -1977
Reno 05:05:13 -26.9 Dark Down 32.3 242.8 Up 04:50:13 - 05:20:13 -2029
Carson City 05:05:12 -27.2 Dark Down 32.4 243.0 Up 04:50:12 - 05:20:12 -2065
Gardnerville 05:05:10 -27.4 Dark Down 32.5 243.2 Up 04:50:10 - 05:20:10 -2091
Yerington 05:05:12 -27.7 Dark Down 32.1 243.7 Up 04:50:12 - 05:20:12 -2109
Hawthorne 05:05:14 -28.3 Dark Down 31.9 244.4 Up 04:50:14 - 05:20:14 -2176
Lee Vining 05:05:10 -28.4 Dark Down 32.5 244.3 Up 04:50:10 - 05:20:10 -2213
Tonopah 05:05:18 -29.5 Dark Down 31.1 245.8 Up 04:50:18 - 05:20:18 -2277
Bishop 05:05:11 -29.2 Dark Down 32.3 245.2 Up 04:50:11 - 05:20:11 -2301
Lone Pine 05:05:11 -29.9 Dark Down 32.3 245.9 Up 04:50:11 - 05:20:11 -2390
Beatty 05:05:15 -30.5 Dark Down 31.2 246.8 Up 04:50:15 - 05:20:15 -2410
CPSLO 05:04:59 -29.0 Dark Down 34.8 244.6 Up 04:49:59 - 05:19:59 -2412
Niwot 05:05:52 -34.2 Dark Down 21.5 254.2 Low 04:50:52 - 05:20:52 -2446
Indian Springs 05:05:18 -31.4 Dark Down 30.6 247.9 Up 04:50:18 - 05:20:18 -2484
Henderson 05:05:20 -32.1 Dark Down 30.2 248.7 Up 04:50:20 - 05:20:20 -2563
Wildwood 05:05:03 -31.1 Dark Down 33.8 247.0 Up 04:50:03 - 05:20:03 -2617
Searchlight/Boulder City 05:05:18 -32.6 Dark Down 30.4 249.0 Up 04:50:18 - 05:20:18 -2624
Laughlin/Bullhead City 05:05:19 -33.0 Dark Down 30.2 249.5 Up 04:50:19 - 05:20:19 -2666
Patrick 05:05:20 -33.2 Dark Down 29.6 249.9 Low 04:50:20 - 05:20:20 -2668
Kingman/Dolan Springs 05:05:22 -33.3 Dark Down 29.8 249.8 Low 04:50:22 - 05:20:22 -2683
Mohave Valley 05:05:19 -33.2 Dark Down 30.3 249.6 Up 04:50:19 - 05:20:19 -2694
DCO 05:05:23 -33.9 Dark Down 29.1 250.6 Low 04:50:23 - 05:20:23 -2724
Idyllwild 05:05:09 -32.6 Dark Down 32.4 248.7 Up 04:50:09 - 05:20:09 -2729
Lake Havasu City 05:05:18 -33.6 Dark Down 30.3 250.0 Up 04:50:18 - 05:20:18 -2744
Parker 05:05:17 -33.8 Dark Down 30.4 250.2 Up 04:50:17 - 05:20:17 -2780
Blythe 05:05:15 -34.0 Dark Down 30.8 250.3 Up 04:50:15 - 05:20:15 -2822
Calipatria 05:05:10 -33.7 Dark Down 31.7 249.9 Up 04:50:10 - 05:20:10 -2836
Yuma 05:05:12 -34.6 Dark Down 31.1 250.8 Up 04:50:12 - 05:20:12 -2914

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 14YY49, (2020/04/12 04:58UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 20.30 162
Alhena         06:37:42.8 +16:23:57  1.9 16.61 159
PPM 152385     07:19:22.4 +02:44:26  5.9  1.34 144
PPM 152304     07:16:53.7 +02:44:25  8.3  0.75 144
PPM 152250     07:15:22.7 +02:04:28  9.6  0.45 144
PPM 152146     07:12:28.2 +02:30:46 10.8  0.44 145
14YY49         07:14:10.7 +02:24:56 13.5       145
Positions are for J2000

Event circumstances last updated at 2018/10/26 20:55:45 UT

Marc W. Buie, Southwest Research Institute

RECON