RECON: TNO occultation with 528219

Event between (528219) 08KV42 and star GA1380:04690902 with event index number of 1596973

Geocentric closest approach at 2020/04/08 03:44:33 UTC

J2000 position of star is 16:37:33.2 +48:28:50
Equinox of date position of star is 16:38:05.6 +48:26:33
Stellar brightness G=14.4, use SENSEUP=64
Star is 67 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 25.5 AU from the Sun and 25.2 AU from the Earth.
The TNO is moving 35.2 km/sec on the sky relative to the star, or, 6.9 arcsec/hr.
The 1-sigma error in the time of the event is 92 seconds.
The 1-sigma cross-track error in the shadow position is 2223 km.
The sky-plane scale is 18294.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 3.0 sec chord
Diameter=42.8 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 528219, (2020/04/08 03:45UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:37.5 +38:48:13  0.0 23.48  84
23Bet Dra      17:30:53.5 +52:17:14  2.8  9.24  76
34 Her         16:30:39.5 +48:55:05  6.2  1.32  66
PPM 055571     16:39:27.0 +48:36:03  9.4  0.27  67
PPM 055557     16:38:35.3 +48:28:24 10.3  0.08  67
528219         16:38:06.9 +48:26:28 14.4        67
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 0.0 km RECON observability=0.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 03:47:18 -11.1 NT Up 23.1 40.7 Low 03:39:10 - 03:55:26 -339
Summerland 03:47:18 -11.0 NT Up 22.7 40.5 Low 03:39:10 - 03:55:26 -346
Penticton 03:47:18 -11.1 NT Up 22.7 40.5 Low 03:39:10 - 03:55:26 -357
Okanagan Falls 03:47:19 -11.2 NT Up 22.6 40.5 Low 03:39:11 - 03:55:27 -370
Oliver 03:47:19 -11.3 NT Up 22.4 40.4 Low 03:39:11 - 03:55:27 -384
Anarchist Mountain Observatory 03:47:19 -11.5 NT Up 22.4 40.5 Low 03:39:11 - 03:55:27 -407
Oroville 03:47:19 -11.5 NT Up 22.3 40.4 Low 03:39:11 - 03:55:27 -409
Tonasket 03:47:19 -11.6 NT Up 22.1 40.4 Low 03:39:11 - 03:55:27 -427
Okanogan 03:47:19 -11.6 NT Up 21.8 40.2 Low 03:39:11 - 03:55:27 -444
Manson/Chelan 03:47:20 -11.5 NT Up 21.2 39.8 Low 03:39:12 - 03:55:28 -450
Brewster 03:47:20 -11.6 NT Up 21.5 40.0 Low 03:39:12 - 03:55:28 -454
Wenatchee 03:47:20 -11.6 NT Up 20.8 39.6 Low 03:39:12 - 03:55:28 -476
Ellensburg 03:47:20 -11.6 NT Up 20.3 39.4 Low 03:39:12 - 03:55:28 -494
Yakima 03:47:21 -11.8 NT Up 20.0 39.3 Low 03:39:13 - 03:55:29 -523
Toppenish/White Swan 03:47:21 -12.0 NT Up 19.9 39.3 Really Low 03:39:13 - 03:55:29 -549
The Dalles 03:47:22 -11.8 NT Up 19.0 38.7 Really Low 03:39:14 - 03:55:30 -561
Goldendale 03:47:21 -11.9 NT Up 19.3 38.9 Really Low 03:39:13 - 03:55:29 -566
Maupin 03:47:22 -12.0 AT Up 18.7 38.7 Really Low 03:39:14 - 03:55:30 -598
Pasco 03:47:20 -12.8 AT Up 20.4 39.9 Low 03:39:12 - 03:55:28 -629
Sisters 03:47:23 -12.0 AT Up 17.8 38.2 Really Low 03:39:15 - 03:55:31 -633
Madras/Culver 03:47:22 -12.2 AT Up 18.3 38.5 Really Low 03:39:14 - 03:55:30 -635
George/Umatilla 03:47:20 -12.8 AT Up 20.0 39.7 Low 03:39:12 - 03:55:28 -642
Redmond 03:47:22 -12.3 AT Up 18.0 38.4 Really Low 03:39:14 - 03:55:30 -658
PNWRO 03:47:20 -13.1 AT Up 20.3 40.0 Low 03:39:12 - 03:55:28 -660
Bend 03:47:23 -12.3 AT Up 17.7 38.3 Really Low 03:39:15 - 03:55:31 -665
Oregon Observatory 03:47:23 -12.3 AT Up 17.5 38.2 Really Low 03:39:15 - 03:55:31 -670
La Pine/Gilchrist 03:47:23 -12.3 AT Up 17.3 38.2 Really Low 03:39:15 - 03:55:31 -682
Chiloquin 03:47:23 -12.5 AT Up 16.3 37.8 Really Low 03:39:15 - 03:55:31 -740
North Lake 03:47:23 -12.9 AT Up 17.3 38.4 Really Low 03:39:15 - 03:55:31 -749
Klamath Falls 03:47:24 -12.7 AT Up 16.1 37.7 Really Low 03:39:16 - 03:55:32 -769
Tulelake 03:47:23 -13.0 AT Up 16.0 37.9 Really Low 03:39:15 - 03:55:31 -807
Paisley 03:47:22 -13.4 AT Up 17.0 38.5 Really Low 03:39:14 - 03:55:30 -811
Lakeview 03:47:22 -13.7 AT Up 16.7 38.5 Really Low 03:39:14 - 03:55:30 -859
Fall River/Burney 03:47:24 -13.4 AT Up 15.3 37.7 Really Low 03:39:16 - 03:55:32 -877
Cedarville 03:47:22 -14.1 AT Up 16.3 38.4 Really Low 03:39:14 - 03:55:30 -917
Susanville 03:47:23 -14.2 AT Up 15.2 38.0 Really Low 03:39:15 - 03:55:31 -968
Greenville 03:47:23 -14.1 AT Up 14.8 37.8 Really Low 03:39:15 - 03:55:31 -969
Gimple 03:47:23 -14.1 AT Up 14.8 37.8 Really Low 03:39:15 - 03:55:31 -975
Quincy 03:47:24 -14.2 AT Up 14.7 37.8 Really Low 03:39:16 - 03:55:32 -984
Portola 03:47:23 -14.5 AT Up 14.8 38.0 Really Low 03:39:15 - 03:55:31 -1023
Reno 03:47:23 -15.1 AT Up 14.9 38.2 Really Low 03:39:15 - 03:55:31 -1083
Carson City 03:47:23 -15.3 AT Up 14.6 38.2 Really Low 03:39:15 - 03:55:31 -1110
Gardnerville 03:47:23 -15.4 AT Up 14.4 38.2 Really Low 03:39:15 - 03:55:31 -1130
Yerington 03:47:22 -15.8 AT Up 14.8 38.5 Really Low 03:39:14 - 03:55:30 -1164
Hawthorne 03:47:22 -16.4 AT Up 14.6 38.6 Really Low 03:39:14 - 03:55:30 -1230
Lee Vining 03:47:22 -16.2 AT Up 14.0 38.3 Really Low 03:39:14 - 03:55:30 -1240
CPSLO 03:47:23 -16.1 AT Up 11.1 37.3 Really Low 03:39:15 - 03:55:31 -1328
Bishop 03:47:22 -17.0 AT Up 13.9 38.6 Really Low 03:39:14 - 03:55:30 -1329
Tonopah 03:47:21 -17.6 AT Up 15.0 39.2 Really Low 03:39:13 - 03:55:29 -1351
Lone Pine 03:47:21 -17.5 AT Up 13.4 38.6 Really Low 03:39:13 - 03:55:29 -1405
Beatty 03:47:20 -18.4 Dark Up 14.3 39.2 Really Low 03:39:12 - 03:55:28 -1464
Wildwood 03:47:21 -18.1 Dark Up 11.2 38.0 Really Low 03:39:13 - 03:55:29 -1548
Indian Springs 03:47:19 -19.3 Dark Up 14.6 39.6 Really Low 03:39:11 - 03:55:27 -1555
Henderson 03:47:18 -20.0 Dark Up 14.6 39.8 Really Low 03:39:10 - 03:55:26 -1636
Searchlight/Boulder City 03:47:18 -20.3 Dark Up 14.1 39.8 Really Low 03:39:10 - 03:55:26 -1682
Idyllwild 03:47:19 -19.7 Dark Up 11.9 38.8 Really Low 03:39:11 - 03:55:27 -1696
Laughlin/Bullhead City 03:47:17 -20.7 Dark Up 14.1 39.9 Really Low 03:39:09 - 03:55:25 -1726
Mohave Valley 03:47:17 -20.8 Dark Up 13.9 39.8 Really Low 03:39:09 - 03:55:25 -1746
Patrick 03:47:17 -21.1 Dark Up 14.7 40.2 Really Low 03:39:09 - 03:55:25 -1750
Kingman/Dolan Springs 03:47:17 -21.1 Dark Up 14.4 40.1 Really Low 03:39:09 - 03:55:25 -1755
Lake Havasu City 03:47:17 -21.2 Dark Up 13.7 39.9 Really Low 03:39:09 - 03:55:25 -1791
Calipatria 03:47:18 -20.9 Dark Up 12.0 39.2 Really Low 03:39:10 - 03:55:26 -1815
Parker 03:47:17 -21.4 Dark Up 13.5 39.8 Really Low 03:39:09 - 03:55:25 -1818
Blythe 03:47:17 -21.4 Dark Up 12.9 39.6 Really Low 03:39:09 - 03:55:25 -1838
SwRI 03:47:07 -24.6 Dark Up 22.6 44.8 Low 03:38:59 - 03:55:15 -1847
Yuma 03:47:17 -21.7 Dark Up 12.2 39.5 Really Low 03:39:09 - 03:55:25 -1903

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 528219, (2020/04/08 03:45UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 23.48  84
23Bet Dra      17:30:25.9 +52:18:05  2.8  9.24  76
34 Her         16:30:06.0 +48:57:40  6.2  1.32  66
PPM 055571     16:38:53.5 +48:38:23  9.4  0.27  67
PPM 055557     16:38:01.7 +48:30:45 10.3  0.08  67
528219         16:37:33.2 +48:28:50 14.4        67
Positions are for J2000

Event circumstances last updated at 2019/07/02 02:35:08 UT

Marc W. Buie, Southwest Research Institute

RECON