RECON: TNO occultation with 523719

Event between (523719) 14LM28 and star UC4-597-055120 with event index number of 306903

Geocentric closest approach at 2019/08/20 05:09:53 UTC

J2000 position of star is 16:56:12.5 +29:19:51
Equinox of date position of star is 16:56:56.8 +29:18:07
Stellar brightness R=16.3, use SENSEUP=128
Star is 118 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 17.0 AU from the Sun and 16.8 AU from the Earth.
The TNO is moving 13.4 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 94 seconds.
The 1-sigma cross-track error in the shadow position is 786 km.
The sky-plane scale is 12206.3 km/arcsec.

The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 4.7 sec chord
Diameter=25.8 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523719, (2019/08/20 05:10UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:36.2 +38:48:10  0.0 22.81  96
27Bet Her      16:31:03.9 +21:26:53  2.8  9.79 127
53 Her         16:53:42.8 +31:40:13  5.3  2.47 118
PPM 105338     16:55:47.7 +29:00:30  7.9  0.39 119
PPM 105366     16:57:35.9 +29:33:36  8.7  0.29 118
PPM 105372     16:57:42.7 +29:05:13 10.5  0.27 118
523719         16:56:58.7 +29:18:03 16.3       118
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 22.1 km RECON observability=1.0 and success probability=26.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 05:05:57 -16.6 AT Down 58.9 240.3 Up 04:57:38 - 05:14:16 2378
Kelowna 05:05:56 -16.7 AT Down 58.7 240.7 Up 04:57:37 - 05:14:15 2365
Penticton 05:05:59 -16.9 AT Down 59.0 241.0 Up 04:57:40 - 05:14:18 2342
Okanagan Falls 05:05:59 -17.0 AT Down 59.1 241.3 Up 04:57:40 - 05:14:18 2326
Oliver 05:05:59 -17.2 AT Down 59.1 241.5 Up 04:57:40 - 05:14:18 2311
Anarchist Mountain Observatory 05:06:00 -17.4 AT Down 59.1 242.0 Up 04:57:41 - 05:14:19 2287
Oroville 05:06:00 -17.4 AT Down 59.2 242.1 Up 04:57:41 - 05:14:19 2284
Tonasket 05:06:01 -17.6 AT Down 59.3 242.4 Up 04:57:42 - 05:14:20 2264
Okanogan 05:06:05 -17.7 AT Down 59.5 242.7 Up 04:57:46 - 05:14:24 2242
Brewster 05:06:06 -17.8 AT Down 59.8 242.9 Up 04:57:47 - 05:14:25 2228
Manson/Chelan 05:06:08 -17.8 AT Down 60.1 242.8 Up 04:57:49 - 05:14:27 2227
Entiat 05:06:09 -17.9 AT Down 60.2 243.0 Up 04:57:50 - 05:14:28 2211
Wenatchee 05:06:12 -18.1 Dark Down 60.4 243.3 Up 04:57:53 - 05:14:31 2194
Ellensburg 05:06:13 -18.2 Dark Down 60.7 243.7 Up 04:57:54 - 05:14:32 2170
Yakima 05:06:16 -18.5 Dark Down 60.9 244.3 Up 04:57:57 - 05:14:35 2136
Toppenish/White Swan 05:06:16 -18.8 Dark Down 60.9 244.9 Up 04:57:57 - 05:14:35 2109
Goldendale 05:06:21 -18.9 Dark Down 61.4 245.3 Up 04:58:02 - 05:14:40 2083
The Dalles 05:06:23 -18.9 Dark Down 61.7 245.2 Up 04:58:04 - 05:14:42 2082
Maupin 05:06:25 -19.2 Dark Down 61.8 246.1 Up 04:58:06 - 05:14:44 2042
Pasco 05:06:13 -19.5 Dark Down 60.1 246.6 Up 04:57:54 - 05:14:32 2038
George/Umatilla 05:06:14 -19.6 Dark Down 60.4 246.9 Up 04:57:55 - 05:14:33 2020
PNWRO 05:06:13 -19.8 Dark Down 60.1 247.3 Up 04:57:54 - 05:14:32 2006
Madras/Culver 05:06:28 -19.6 Dark Down 62.0 247.0 Up 04:58:09 - 05:14:47 1998
Sisters 05:06:31 -19.6 Dark Down 62.4 247.0 Up 04:58:12 - 05:14:50 1993
Redmond 05:06:29 -19.8 Dark Down 62.2 247.6 Up 04:58:10 - 05:14:48 1970
Bend 05:06:31 -19.9 Dark Down 62.4 247.8 Up 04:58:12 - 05:14:50 1959
Oregon Observatory 05:06:33 -19.9 Dark Down 62.5 247.9 Up 04:58:14 - 05:14:52 1952
La Pine/Gilchrist 05:06:35 -20.0 Dark Down 62.6 248.2 Up 04:58:16 - 05:14:54 1938
North Lake 05:06:35 -20.7 Dark Down 62.4 249.7 Up 04:58:16 - 05:14:54 1870
Chiloquin 05:06:41 -20.6 Dark Down 63.2 249.9 Up 04:58:22 - 05:15:00 1864
Klamath Falls 05:06:44 -20.9 Dark Down 63.3 250.6 Up 04:58:25 - 05:15:03 1831
Paisley 05:06:37 -21.2 Dark Down 62.3 251.1 Up 04:58:18 - 05:14:56 1805
Tulelake 05:06:44 -21.2 Dark Down 63.2 251.5 Up 04:58:25 - 05:15:03 1793
Lakeview 05:06:37 -21.7 Dark Down 62.3 252.3 Up 04:58:18 - 05:14:56 1753
Fall River/Burney 05:06:48 -21.9 Dark Down 63.4 253.3 Up 04:58:29 - 05:15:07 1713
Cedarville 05:06:40 -22.2 Dark Down 62.4 253.7 Up 04:58:21 - 05:14:59 1689
Susanville 05:06:48 -22.7 Dark Down 63.0 255.3 Up 04:58:29 - 05:15:07 1621
Greenville 05:06:50 -22.7 Dark Down 63.3 255.5 Up 04:58:31 - 05:15:09 1614
Gimple 05:06:51 -22.8 Dark Down 63.2 255.6 Up 04:58:32 - 05:15:10 1609
Quincy 05:06:51 -22.9 Dark Down 63.3 255.9 Up 04:58:32 - 05:15:10 1597
Portola 05:06:50 -23.2 Dark Down 63.0 256.6 Up 04:58:31 - 05:15:09 1561
Reno 05:06:50 -23.8 Dark Down 62.6 257.8 Up 04:58:31 - 05:15:09 1504
Carson City 05:06:52 -24.0 Dark Down 62.6 258.5 Up 04:58:33 - 05:15:11 1473
Gardnerville 05:06:52 -24.2 Dark Down 62.6 259.0 Up 04:58:33 - 05:15:11 1450
Yerington 05:06:49 -24.5 Dark Down 62.2 259.4 Up 04:58:30 - 05:15:08 1423
Hawthorne 05:06:49 -25.2 Dark Down 61.9 260.7 Up 04:58:30 - 05:15:08 1356
Lee Vining 05:06:55 -25.3 Dark Down 62.3 261.4 Up 04:58:36 - 05:15:14 1335
Bishop 05:06:55 -26.1 Dark Down 61.8 263.1 Up 04:58:36 - 05:15:14 1246
Tonopah 05:06:47 -26.3 Dark Up 60.8 262.8 Up 04:58:28 - 05:15:06 1242
CPSLO 05:07:16 -26.1 Dark Down 63.8 265.5 Up 04:58:57 - 05:15:35 1202
Lone Pine 05:06:57 -26.8 Dark Down 61.6 264.8 Up 04:58:38 - 05:15:16 1165
Beatty 05:06:51 -27.4 Dark Up 60.6 265.2 Up 04:58:32 - 05:15:10 1121
Indian Springs 05:06:48 -28.2 Dark Up 59.7 266.5 Up 04:58:29 - 05:15:07 1038
Wildwood 05:07:14 -28.2 Dark Down 62.1 269.2 Up 04:58:55 - 05:15:33 988
Henderson 05:06:48 -29.0 Dark Up 59.2 267.8 Up 04:58:29 - 05:15:07 957
Searchlight/Boulder City 05:06:51 -29.4 Dark Up 59.2 268.9 Up 04:58:32 - 05:15:10 905
Niwot 05:05:47 -30.6 Dark Up 51.5 268.2 Up 04:57:28 - 05:14:06 885
Laughlin/Bullhead City 05:06:51 -29.8 Dark Up 58.9 269.6 Up 04:58:32 - 05:15:10 862
Idyllwild 05:07:08 -29.6 Dark Up 60.6 270.9 Up 04:58:49 - 05:15:27 855
Patrick 05:06:46 -30.0 Dark Up 58.3 269.6 Up 04:58:27 - 05:15:05 847
Mohave Valley 05:06:53 -30.0 Dark Up 58.9 270.0 Up 04:58:34 - 05:15:12 839
Kingman/Dolan Springs 05:06:48 -30.1 Dark Up 58.5 269.8 Up 04:58:29 - 05:15:07 838
Lake Havasu City 05:06:53 -30.5 Dark Up 58.7 270.8 Up 04:58:34 - 05:15:12 792
DCO 05:06:44 -30.7 Dark Up 57.8 270.5 Up 04:58:25 - 05:15:03 786
Parker 05:06:55 -30.7 Dark Up 58.6 271.4 Up 04:58:36 - 05:15:14 761
Calipatria 05:07:05 -30.7 Dark Up 59.6 272.5 Up 04:58:46 - 05:15:24 741
Blythe 05:06:59 -30.9 Dark Up 58.9 272.1 Up 04:58:40 - 05:15:18 733
Yuma 05:07:04 -31.6 Dark Up 58.8 273.6 Up 04:58:45 - 05:15:23 658

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 523719, (2019/08/20 05:10UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 22.81  96
27Bet Her      16:30:13.1 +21:29:22  2.8  9.79 127
53 Her         16:52:57.9 +31:42:06  5.3  2.47 118
PPM 105338     16:55:01.4 +29:02:20  7.9  0.39 119
PPM 105366     16:56:49.9 +29:35:22  8.7  0.29 118
PPM 105372     16:56:56.3 +29:06:59 10.5  0.27 118
523719         16:56:12.5 +29:19:51 16.3       118
Positions are for J2000

Event circumstances last updated at 2018/11/05 21:18:30 UT

Marc W. Buie, Southwest Research Institute

RECON