RECON: TNO occultation with 505476

Event between (505476) 13UL15 and star UC4-480-001832 with event index number of 224114

Geocentric closest approach at 2018/11/25 07:49:50 UTC

J2000 position of star is 01:14:30.3 +05:55:42
Equinox of date position of star is 01:15:26.2 +06:01:22
Stellar brightness R=15.4, use SENSEUP=128
Star is 71 degrees from the moon. Moon is 94% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 43.4 AU from the Sun and 42.7 AU from the Earth.
The TNO is moving 17.1 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 154 seconds.
The 1-sigma cross-track error in the shadow position is 1896 km.
The sky-plane scale is 30975.4 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 16.8 sec chord
Diameter=117.7 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 505476, (2018/11/25 07:50UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:14:12.7 +15:17:19  2.8 17.66  82
80 Psc         01:09:20.7 +05:44:57  5.5  1.55  73
PPM 144454     01:18:34.6 +05:59:00  8.1  0.77  71
PPM 144363     01:13:30.0 +05:52:34  9.8  0.52  72
PPM 144392     01:15:15.6 +06:20:10 11.2  0.31  71
505476         01:15:29.3 +06:01:41 15.4        71
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=24.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:45:48 -61.8 Dark Up 34.0 234.3 Up 07:32:28 - 07:59:08 1292
Tonasket 07:45:47 -62.0 Dark Up 34.1 234.4 Up 07:32:27 - 07:59:07 1271
Okanogan 07:45:47 -62.4 Dark Up 34.4 234.4 Up 07:32:27 - 07:59:07 1241
Brewster 07:45:47 -62.7 Dark Up 34.7 234.4 Up 07:32:27 - 07:59:07 1218
Manson/Chelan 07:45:48 -62.9 Dark Up 35.0 234.1 Up 07:32:28 - 07:59:08 1204
Entiat 07:45:48 -63.1 Dark Up 35.1 234.2 Up 07:32:28 - 07:59:08 1184
Wenatchee 07:45:48 -63.3 Dark Up 35.3 234.2 Up 07:32:28 - 07:59:08 1161
Ellensburg 07:45:48 -63.7 Dark Up 35.7 234.2 Up 07:32:28 - 07:59:08 1125
Yakima 07:45:48 -64.2 Dark Up 36.0 234.5 Up 07:32:28 - 07:59:08 1086
Toppenish/White Swan 07:45:47 -64.4 Dark Up 36.0 234.8 Up 07:32:27 - 07:59:07 1063
Pasco 07:45:43 -64.5 Dark Up 35.3 236.1 Up 07:32:23 - 07:59:03 1034
Goldendale 07:45:48 -64.9 Dark Up 36.6 234.7 Up 07:32:28 - 07:59:08 1017
PNWRO 07:45:42 -64.7 Dark Up 35.4 236.5 Up 07:32:22 - 07:59:02 1007
George/Umatilla 07:45:43 -64.8 Dark Up 35.7 236.1 Up 07:32:23 - 07:59:03 1005
The Dalles 07:45:49 -65.1 Dark Up 36.9 234.4 Up 07:32:29 - 07:59:09 1000
Maupin 07:45:47 -65.5 Dark Up 37.1 234.8 Up 07:32:27 - 07:59:07 958
Madras/Culver 07:45:47 -66.1 Dark Up 37.4 235.1 Up 07:32:27 - 07:59:07 906
Sisters 07:45:48 -66.4 Dark Up 37.9 234.8 Up 07:32:28 - 07:59:08 880
Redmond 07:45:47 -66.4 Dark Up 37.6 235.3 Up 07:32:27 - 07:59:07 872
Bend 07:45:47 -66.7 Dark Up 37.8 235.3 Up 07:32:27 - 07:59:07 853
Oregon Observatory 07:45:47 -66.8 Dark Up 38.0 235.2 Up 07:32:27 - 07:59:07 839
La Pine/Gilchrist 07:45:47 -67.0 Dark Up 38.2 235.3 Up 07:32:27 - 07:59:07 819
North Lake 07:45:45 -67.5 Dark Up 38.1 236.2 Up 07:32:25 - 07:59:05 768
Chiloquin 07:45:48 -68.1 Dark Up 39.0 235.7 Up 07:32:28 - 07:59:08 716
Paisley 07:45:43 -68.0 Dark Up 38.2 236.9 Up 07:32:23 - 07:59:03 708
Klamath Falls 07:45:47 -68.5 Dark Up 39.2 236.0 Up 07:32:27 - 07:59:07 681
Lakeview 07:45:42 -68.6 Dark Up 38.3 237.4 Up 07:32:22 - 07:59:02 655
Tulelake 07:45:46 -68.7 Dark Up 39.1 236.5 Up 07:32:26 - 07:59:06 649
Cedarville 07:45:41 -69.2 Dark Up 38.6 238.0 Up 07:32:21 - 07:59:01 587
Fall River/Burney 07:45:45 -69.7 Dark Up 39.6 237.2 Up 07:32:25 - 07:59:05 558
Susanville 07:45:41 -70.3 Dark Up 39.5 238.3 Up 07:32:21 - 07:59:01 483
Greenville 07:45:42 -70.6 Dark Up 39.8 238.2 Up 07:32:22 - 07:59:02 460
Gimple 07:45:42 -70.6 Dark Up 39.7 238.3 Up 07:32:22 - 07:59:02 458
Quincy 07:45:42 -70.8 Dark Up 39.9 238.4 Up 07:32:22 - 07:59:02 439
Portola 07:45:40 -70.9 Dark Up 39.6 238.9 Up 07:32:20 - 07:59:00 419
Reno 07:45:38 -71.2 Dark Up 39.4 239.7 Up 07:32:18 - 07:58:58 382
Carson City 07:45:37 -71.6 Dark Up 39.5 240.0 Up 07:32:17 - 07:58:57 345
Gardnerville 07:45:37 -71.8 Dark Up 39.6 240.2 Up 07:32:17 - 07:58:57 320
Yerington 07:45:35 -71.8 Dark Up 39.2 240.7 Up 07:32:15 - 07:58:55 316
Niwot 07:44:52 -67.1 Dark Up 29.0 251.8 Low 07:31:32 - 07:58:12 260
Hawthorne 07:45:33 -72.2 Dark Up 39.1 241.6 Up 07:32:13 - 07:58:53 260
Lee Vining 07:45:34 -72.8 Dark Up 39.7 241.5 Up 07:32:14 - 07:58:54 210
Tonopah 07:45:27 -72.6 Dark Up 38.3 243.2 Up 07:32:07 - 07:58:47 191
Bishop 07:45:31 -73.4 Dark Up 39.5 242.6 Up 07:32:11 - 07:58:51 137
Beatty 07:45:25 -73.7 Dark Up 38.5 244.4 Up 07:32:05 - 07:58:45 65
Lone Pine 07:45:29 -74.1 Dark Up 39.6 243.5 Up 07:32:09 - 07:58:49 53
Indian Springs 07:45:21 -73.8 Dark Up 37.9 245.5 Up 07:32:01 - 07:58:41 15
CPSLO 07:45:38 -75.4 Dark Up 42.0 242.1 Up 07:32:18 - 07:58:58 -39
Henderson 07:45:18 -74.2 Dark Up 37.6 246.5 Up 07:31:58 - 07:58:38 -51
Searchlight/Boulder City 07:45:17 -74.7 Dark Up 37.8 246.9 Up 07:31:57 - 07:58:37 -111
Patrick 07:45:14 -74.5 Dark Up 37.0 247.8 Up 07:31:54 - 07:58:34 -132
Laughlin/Bullhead City 07:45:16 -74.9 Dark Up 37.6 247.4 Up 07:31:56 - 07:58:36 -148
Kingman/Dolan Springs 07:45:14 -74.8 Dark Up 37.2 247.8 Up 07:31:54 - 07:58:34 -153
DCO 07:45:11 -74.6 Dark Up 36.6 248.6 Up 07:31:51 - 07:58:31 -174
Mohave Valley 07:45:15 -75.2 Dark Up 37.7 247.6 Up 07:31:55 - 07:58:35 -176
Wildwood 07:45:30 -76.6 Dark Up 41.1 244.9 Up 07:32:10 - 07:58:50 -199
Lake Havasu City 07:45:15 -75.5 Dark Up 37.7 248.1 Up 07:31:55 - 07:58:35 -222
Parker 07:45:14 -75.8 Dark Up 37.8 248.4 Up 07:31:54 - 07:58:34 -259
Idyllwild 07:45:22 -76.8 Dark Up 39.8 246.8 Up 07:32:02 - 07:58:42 -267
Blythe 07:45:15 -76.4 Dark Up 38.2 248.5 Up 07:31:55 - 07:58:35 -311
Calipatria 07:45:18 -77.1 Dark Up 39.1 248.2 Up 07:31:58 - 07:58:38 -349
Yuma 07:45:15 -77.3 Dark Up 38.6 249.2 Up 07:31:55 - 07:58:35 -408

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 505476, (2018/11/25 07:50UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:13:14.2 +15:11:01  2.8 17.66  82
80 Psc         01:08:21.9 +05:38:56  5.5  1.55  73
PPM 144454     01:17:35.6 +05:53:03  8.1  0.77  71
PPM 144363     01:12:31.1 +05:46:34  9.8  0.52  72
PPM 144392     01:14:16.6 +06:14:11 11.2  0.31  71
505476         01:14:30.3 +05:55:42 15.4        71
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:03:52 UT

Marc W. Buie, Southwest Research Institute

RECON