RECON: TNO occultation with 505476

Event between (505476) 13UL15 and star GA0940:00110109 with event index number of 224114

Geocentric closest approach at 2018/11/25 07:45:25 UTC

J2000 position of star is 01:14:30.3 +05:55:42
Equinox of date position of star is 01:15:27.8 +06:01:32
Stellar brightness G=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 217 seconds.
The 1-sigma cross-track error in the shadow position is 2319 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 07:45UT)
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  70
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 4.2 sigma about the mid-time.
The median site spacing is 23.1 km RECON observability=1.0 and success probability=21.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 07:41:28 -61.2 Dark Up 34.3 232.7 Up 07:26:28 - 07:56:28 1363
Oroville 07:41:27 -61.8 Dark Up 34.6 233.2 Up 07:26:27 - 07:56:27 1306
Tonasket 07:41:26 -62.0 Dark Up 34.7 233.3 Up 07:26:26 - 07:56:26 1284
Okanogan 07:41:26 -62.4 Dark Up 35.0 233.3 Up 07:26:26 - 07:56:26 1255
Brewster 07:41:26 -62.6 Dark Up 35.2 233.3 Up 07:26:26 - 07:56:26 1232
Manson/Chelan 07:41:28 -62.8 Dark Up 35.6 233.0 Up 07:26:28 - 07:56:28 1217
Entiat 07:41:27 -63.1 Dark Up 35.7 233.1 Up 07:26:27 - 07:56:27 1198
Wenatchee 07:41:27 -63.3 Dark Up 35.9 233.1 Up 07:26:27 - 07:56:27 1175
Ellensburg 07:41:28 -63.7 Dark Up 36.3 233.1 Up 07:26:28 - 07:56:28 1139
Yakima 07:41:27 -64.1 Dark Up 36.6 233.3 Up 07:26:27 - 07:56:27 1101
Toppenish/White Swan 07:41:26 -64.3 Dark Up 36.6 233.7 Up 07:26:26 - 07:56:26 1078
Pasco 07:41:22 -64.5 Dark Up 36.0 235.0 Up 07:26:22 - 07:56:22 1048
Goldendale 07:41:27 -64.9 Dark Up 37.2 233.5 Up 07:26:27 - 07:56:27 1031
PNWRO 07:41:21 -64.7 Dark Up 36.0 235.4 Up 07:26:21 - 07:56:21 1021
George/Umatilla 07:41:22 -64.8 Dark Up 36.3 235.0 Up 07:26:22 - 07:56:22 1019
The Dalles 07:41:28 -65.1 Dark Up 37.5 233.3 Up 07:26:28 - 07:56:28 1015
Maupin 07:41:27 -65.5 Dark Up 37.7 233.7 Up 07:26:27 - 07:56:27 974
Madras/Culver 07:41:27 -66.0 Dark Up 38.0 234.0 Up 07:26:27 - 07:56:27 921
Sisters 07:41:28 -66.3 Dark Up 38.5 233.7 Up 07:26:28 - 07:56:28 896
Redmond 07:41:26 -66.4 Dark Up 38.3 234.1 Up 07:26:26 - 07:56:26 888
Bend 07:41:27 -66.6 Dark Up 38.5 234.1 Up 07:26:27 - 07:56:27 869
Oregon Observatory 07:41:27 -66.7 Dark Up 38.7 234.1 Up 07:26:27 - 07:56:27 854
La Pine/Gilchrist 07:41:27 -66.9 Dark Up 38.8 234.2 Up 07:26:27 - 07:56:27 835
North Lake 07:41:25 -67.4 Dark Up 38.7 235.1 Up 07:26:25 - 07:56:25 783
Chiloquin 07:41:27 -68.0 Dark Up 39.7 234.6 Up 07:26:27 - 07:56:27 732
Paisley 07:41:23 -68.0 Dark Up 38.8 235.8 Up 07:26:23 - 07:56:23 723
Klamath Falls 07:41:27 -68.4 Dark Up 39.8 234.9 Up 07:26:27 - 07:56:27 697
Lakeview 07:41:22 -68.5 Dark Up 39.0 236.3 Up 07:26:22 - 07:56:22 670
Tulelake 07:41:26 -68.7 Dark Up 39.8 235.4 Up 07:26:26 - 07:56:26 666
Cedarville 07:41:20 -69.2 Dark Up 39.2 237.0 Up 07:26:20 - 07:56:20 602
Fall River/Burney 07:41:24 -69.6 Dark Up 40.3 236.1 Up 07:26:24 - 07:56:24 574
Susanville 07:41:21 -70.3 Dark Up 40.2 237.3 Up 07:26:21 - 07:56:21 499
Greenville 07:41:22 -70.5 Dark Up 40.5 237.2 Up 07:26:22 - 07:56:22 476
Gimple 07:41:22 -70.5 Dark Up 40.4 237.2 Up 07:26:22 - 07:56:22 475
Quincy 07:41:22 -70.7 Dark Up 40.6 237.3 Up 07:26:22 - 07:56:22 456
Portola 07:41:20 -70.9 Dark Up 40.4 237.9 Up 07:26:20 - 07:56:20 435
Reno 07:41:18 -71.2 Dark Up 40.1 238.7 Up 07:26:18 - 07:56:18 398
Carson City 07:41:17 -71.5 Dark Up 40.3 239.0 Up 07:26:17 - 07:56:17 361
Gardnerville 07:41:17 -71.8 Dark Up 40.3 239.2 Up 07:26:17 - 07:56:17 336
Yerington 07:41:15 -71.8 Dark Up 39.9 239.7 Up 07:26:15 - 07:56:15 331
Hawthorne 07:41:12 -72.2 Dark Up 39.8 240.5 Up 07:26:12 - 07:56:12 276
Niwot 07:40:31 -67.6 Dark Up 29.8 250.9 Low 07:25:31 - 07:55:31 269
Lee Vining 07:41:14 -72.8 Dark Up 40.4 240.5 Up 07:26:14 - 07:56:14 226
Tonopah 07:41:07 -72.7 Dark Up 39.1 242.2 Up 07:26:07 - 07:56:07 206
Bishop 07:41:11 -73.4 Dark Up 40.2 241.6 Up 07:26:11 - 07:56:11 153
Beatty 07:41:04 -73.8 Dark Up 39.3 243.4 Up 07:26:04 - 07:56:04 80
Lone Pine 07:41:09 -74.1 Dark Up 40.3 242.5 Up 07:26:09 - 07:56:09 69
Indian Springs 07:41:00 -74.0 Dark Up 38.7 244.6 Up 07:26:00 - 07:56:00 30
CPSLO 07:41:18 -75.3 Dark Up 42.8 241.1 Up 07:26:18 - 07:56:18 -21
Henderson 07:40:57 -74.4 Dark Up 38.4 245.6 Up 07:25:57 - 07:55:57 -36
Searchlight/Boulder City 07:40:57 -75.0 Dark Up 38.6 246.0 Up 07:25:57 - 07:55:57 -97
Patrick 07:40:53 -74.8 Dark Up 37.8 246.9 Up 07:25:53 - 07:55:53 -118
Laughlin/Bullhead City 07:40:55 -75.2 Dark Up 38.5 246.5 Up 07:25:55 - 07:55:55 -133
Kingman/Dolan Springs 07:40:53 -75.0 Dark Up 38.1 246.9 Up 07:25:53 - 07:55:53 -138
DCO 07:40:50 -74.9 Dark Up 37.4 247.7 Up 07:25:50 - 07:55:50 -160
Mohave Valley 07:40:55 -75.4 Dark Up 38.6 246.7 Up 07:25:55 - 07:55:55 -162
Wildwood 07:41:10 -76.7 Dark Up 41.9 243.9 Up 07:26:10 - 07:56:10 -183
Lake Havasu City 07:40:54 -75.8 Dark Up 38.5 247.2 Up 07:25:54 - 07:55:54 -208
Parker 07:40:53 -76.1 Dark Up 38.6 247.5 Up 07:25:53 - 07:55:53 -245
Idyllwild 07:41:02 -76.9 Dark Up 40.6 245.8 Up 07:26:02 - 07:56:02 -251
Blythe 07:40:54 -76.7 Dark Up 39.1 247.7 Up 07:25:54 - 07:55:54 -296
Calipatria 07:40:57 -77.3 Dark Up 40.0 247.3 Up 07:25:57 - 07:55:57 -334
Yuma 07:40:54 -77.6 Dark Up 39.4 248.3 Up 07:25:54 - 07:55:54 -393

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 07:45UT)
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 +05:38:55  5.5  1.55  73
PPM 144454     01:17:35.6 +05:53:03  8.1  0.77  70
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 2018/06/05 16:35:26 UT

Marc W. Buie, Southwest Research Institute

RECON