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 04:57:22 UTC

J2000 position of star is 07:14:10.7 +02:24:56
Equinox of date position of star is 07:15:10.3 +02:22:53
Stellar brightness R=13.5, use SENSEUP=32
Star is 145 degrees from the moon. Moon is 78% illuminated.
TNO apparent brightness V=23.4

[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 73 seconds.
The 1-sigma cross-track error in the shadow position is 1036 km.
The sky-plane scale is 14303.9 km/arcsec.

The TNO has an absolute magnitude Hv=10.2
Diameter=55.2 km assuming a 5% albedo -- 4.2 sec chord
Diameter=22.5 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 14YY49, (2020/04/12 04:57UT)
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 5.0 sigma about the mid-time.
The median site spacing is 23.0 km RECON observability=1.0 and success probability=25.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 05:04:24 -20.0 Dark Down 27.2 237.5 Low 04:57:51 - 05:10:56 -804
Kelowna 05:04:24 -20.1 Dark Down 27.0 237.9 Low 04:57:52 - 05:10:57 -812
Penticton 05:04:23 -20.3 Dark Down 27.3 237.9 Low 04:57:50 - 05:10:55 -842
Okanagan Falls 05:04:24 -20.4 Dark Down 27.4 237.9 Low 04:57:51 - 05:10:56 -859
Oliver 05:04:23 -20.5 Dark Down 27.5 238.0 Low 04:57:51 - 05:10:56 -876
Anarchist Mountain Observatory 05:04:24 -20.8 Dark Down 27.5 238.3 Low 04:57:51 - 05:10:56 -899
Oroville 05:04:23 -20.8 Dark Down 27.6 238.2 Low 04:57:50 - 05:10:55 -904
Tonasket 05:04:24 -20.9 Dark Down 27.7 238.3 Low 04:57:51 - 05:10:56 -927
Okanogan 05:04:22 -21.1 Dark Down 27.9 238.3 Low 04:57:50 - 05:10:55 -955
Brewster 05:04:21 -21.2 Dark Down 28.2 238.3 Low 04:57:49 - 05:10:54 -974
Manson/Chelan 05:04:20 -21.1 Dark Down 28.5 238.0 Low 04:57:48 - 05:10:53 -982
Entiat 05:04:20 -21.2 Dark Down 28.7 238.1 Low 04:57:47 - 05:10:52 -1001
Wenatchee 05:04:19 -21.4 Dark Down 28.9 238.1 Low 04:57:47 - 05:10:52 -1022
Ellensburg 05:04:18 -21.5 Dark Down 29.2 238.1 Low 04:57:45 - 05:10:50 -1055
Yakima 05:04:17 -21.8 Dark Down 29.4 238.2 Low 04:57:45 - 05:10:50 -1094
Toppenish/White Swan 05:04:17 -22.0 Dark Down 29.5 238.5 Low 04:57:44 - 05:10:49 -1121
Goldendale 05:04:16 -22.2 Dark Down 30.0 238.4 Up 04:57:43 - 05:10:48 -1159
The Dalles 05:04:14 -22.1 Dark Down 30.3 238.1 Up 04:57:42 - 05:10:47 -1168
Pasco 05:04:22 -22.8 Dark Down 28.8 239.8 Low 04:57:50 - 05:10:55 -1178
George/Umatilla 05:04:20 -22.9 Dark Down 29.1 239.7 Low 04:57:48 - 05:10:53 -1203
PNWRO 05:04:21 -23.0 Dark Down 28.7 240.1 Low 04:57:49 - 05:10:54 -1210
Maupin 05:04:15 -22.4 Dark Down 30.5 238.5 Up 04:57:43 - 05:10:48 -1213
Madras/Culver 05:04:14 -22.8 Dark Down 30.8 238.7 Up 04:57:42 - 05:10:47 -1264
Sisters 05:04:11 -22.7 Dark Down 31.3 238.4 Up 04:57:38 - 05:10:43 -1280
Redmond 05:04:12 -23.0 Dark Down 31.0 238.8 Up 04:57:40 - 05:10:45 -1297
Bend 05:04:12 -23.0 Dark Down 31.2 238.8 Up 04:57:40 - 05:10:45 -1313
Oregon Observatory 05:04:11 -23.1 Dark Down 31.4 238.8 Up 04:57:38 - 05:10:43 -1325
La Pine/Gilchrist 05:04:12 -23.2 Dark Down 31.5 238.8 Up 04:57:39 - 05:10:44 -1342
North Lake 05:04:12 -23.8 Dark Down 31.4 239.6 Up 04:57:39 - 05:10:44 -1408
Chiloquin 05:04:08 -23.7 Dark Down 32.4 239.1 Up 04:57:35 - 05:10:40 -1437
Klamath Falls 05:04:07 -23.9 Dark Down 32.5 239.3 Up 04:57:35 - 05:10:40 -1473
Paisley 05:04:12 -24.3 Dark Down 31.4 240.2 Up 04:57:39 - 05:10:44 -1475
Tulelake 05:04:07 -24.3 Dark Down 32.4 239.7 Up 04:57:35 - 05:10:40 -1511
Lakeview 05:04:11 -24.8 Dark Down 31.6 240.7 Up 04:57:39 - 05:10:44 -1533
Fall River/Burney 05:04:06 -24.9 Dark Down 32.8 240.3 Up 04:57:33 - 05:10:38 -1603
Cedarville 05:04:11 -25.3 Dark Down 31.8 241.2 Up 04:57:39 - 05:10:44 -1604
Susanville 05:04:08 -25.7 Dark Down 32.6 241.3 Up 04:57:35 - 05:10:40 -1695
Greenville 05:04:05 -25.7 Dark Down 33.0 241.2 Up 04:57:33 - 05:10:38 -1710
Gimple 05:04:05 -25.8 Dark Down 32.9 241.3 Up 04:57:33 - 05:10:38 -1713
Quincy 05:04:05 -25.8 Dark Down 33.1 241.3 Up 04:57:32 - 05:10:37 -1730
Portola 05:04:07 -26.2 Dark Down 32.8 241.8 Up 04:57:35 - 05:10:40 -1761
Reno 05:04:08 -26.8 Dark Down 32.5 242.6 Up 04:57:36 - 05:10:41 -1813
Carson City 05:04:07 -27.0 Dark Down 32.6 242.8 Up 04:57:35 - 05:10:40 -1850
Gardnerville 05:04:08 -27.2 Dark Down 32.7 243.0 Up 04:57:36 - 05:10:41 -1876
Yerington 05:04:09 -27.5 Dark Down 32.3 243.4 Up 04:57:36 - 05:10:41 -1894
Hawthorne 05:04:10 -28.1 Dark Down 32.1 244.2 Up 04:57:37 - 05:10:42 -1961
Lee Vining 05:04:06 -28.2 Dark Down 32.7 244.1 Up 04:57:34 - 05:10:39 -1997
Tonopah 05:04:14 -29.3 Dark Down 31.3 245.6 Up 04:57:42 - 05:10:47 -2062
Bishop 05:04:08 -29.0 Dark Down 32.4 245.0 Up 04:57:36 - 05:10:41 -2085
Lone Pine 05:04:07 -29.7 Dark Down 32.5 245.7 Up 04:57:35 - 05:10:40 -2174
Beatty 05:04:12 -30.3 Dark Down 31.4 246.6 Up 04:57:39 - 05:10:44 -2195
CPSLO 05:03:56 -28.9 Dark Down 35.0 244.3 Up 04:57:23 - 05:10:28 -2195
Niwot 05:04:50 -34.1 Dark Down 21.7 254.0 Low 04:58:18 - 05:11:23 -2235
Indian Springs 05:04:15 -31.2 Dark Down 30.7 247.6 Up 04:57:42 - 05:10:47 -2269
Henderson 05:04:15 -32.0 Dark Down 30.4 248.5 Up 04:57:43 - 05:10:48 -2348
Wildwood 05:03:59 -30.9 Dark Down 34.0 246.8 Up 04:57:26 - 05:10:31 -2401
Searchlight/Boulder City 05:04:15 -32.4 Dark Down 30.6 248.8 Up 04:57:42 - 05:10:47 -2409
Laughlin/Bullhead City 05:04:15 -32.8 Dark Down 30.4 249.3 Up 04:57:42 - 05:10:47 -2451
Patrick 05:04:17 -33.1 Dark Down 29.8 249.7 Low 04:57:45 - 05:10:50 -2453
Kingman/Dolan Springs 05:04:16 -33.1 Dark Down 30.0 249.6 Up 04:57:43 - 05:10:48 -2468
Mohave Valley 05:04:14 -33.0 Dark Down 30.5 249.4 Up 04:57:42 - 05:10:47 -2479
DCO 05:04:19 -33.7 Dark Down 29.3 250.4 Low 04:57:47 - 05:10:52 -2509
Idyllwild 05:04:04 -32.4 Dark Down 32.6 248.4 Up 04:57:31 - 05:10:36 -2513
Lake Havasu City 05:04:13 -33.4 Dark Down 30.5 249.8 Up 04:57:41 - 05:10:46 -2529
Parker 05:04:14 -33.7 Dark Down 30.6 250.0 Up 04:57:42 - 05:10:47 -2565
Blythe 05:04:13 -33.8 Dark Down 31.0 250.1 Up 04:57:40 - 05:10:45 -2607
Calipatria 05:04:06 -33.6 Dark Down 31.9 249.7 Up 04:57:34 - 05:10:39 -2621
Yuma 05:04:09 -34.4 Dark Down 31.3 250.6 Up 04:57:36 - 05:10:41 -2698

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 04:57UT)
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 2019/01/18 19:48:10 UT

Marc W. Buie, Southwest Research Institute

RECON