RECON: TNO occultation with 523700

Event between (523700) 14GM54 and star UC4-566-080467 with event index number of 324359

Geocentric closest approach at 2019/08/23 10:43:41 UTC

J2000 position of star is 19:15:47.1 +23:01:26
Equinox of date position of star is 19:16:34.8 +23:03:29
Stellar brightness R=14.2, use SENSEUP=64
Star is 116 degrees from the moon. Moon is 52% illuminated.
TNO apparent brightness V=21.5

[RECON map]
TNO is 26.8 AU from the Sun and 26.2 AU from the Earth.
The TNO is moving 24.4 km/sec on the sky relative to the star, or, 4.6 arcsec/hr.
The 1-sigma error in the time of the event is 49 seconds.
The 1-sigma cross-track error in the shadow position is 1185 km.
The sky-plane scale is 18977.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 9.4 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523700, (2019/08/23 10:44UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:36.2 +38:48:10  0.0 17.80 112
Tarazed        19:47:11.6 +10:39:45  2.7 14.39 115
2 Vul          19:18:33.5 +23:03:43  5.2  0.45 115
PPM 108713     19:18:01.4 +22:27:44  7.9  0.68 116
PPM 108676     19:16:31.2 +22:58:39  9.4  0.08 116
523700         19:16:36.9 +23:03:34 14.2       116
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 26.0 km RECON observability=0.6 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 10:39:39 -19.4 Dark Up 21.8 280.3 Low 10:35:04 - 10:44:15 -6035
Summerland 10:39:39 -19.6 Dark Up 22.0 280.1 Low 10:35:04 - 10:44:15 -6043
Penticton 10:39:40 -19.8 Dark Up 21.8 280.3 Low 10:35:04 - 10:44:15 -6076
Okanagan Falls 10:39:40 -19.9 Dark Up 21.8 280.4 Low 10:35:05 - 10:44:16 -6097
Oliver 10:39:39 -20.0 Dark Up 21.8 280.5 Low 10:35:04 - 10:44:15 -6115
Anarchist Mountain Observatory 10:39:39 -20.1 Dark Up 21.6 280.7 Low 10:35:04 - 10:44:15 -6131
Oroville 10:39:39 -20.2 Dark Up 21.6 280.7 Low 10:35:04 - 10:44:15 -6141
Tonasket 10:39:39 -20.3 Dark Up 21.6 280.8 Low 10:35:04 - 10:44:15 -6166
Okanogan 10:39:39 -20.7 Dark Up 21.6 280.8 Low 10:35:04 - 10:44:15 -6205
Brewster 10:39:41 -20.9 Dark Up 21.7 280.8 Low 10:35:05 - 10:44:16 -6236
Manson/Chelan 10:39:41 -21.3 Dark Up 21.9 280.6 Low 10:35:05 - 10:44:16 -6263
Entiat 10:39:42 -21.5 Dark Up 21.9 280.6 Low 10:35:07 - 10:44:18 -6288
Wenatchee 10:39:41 -21.7 Dark Up 21.9 280.6 Low 10:35:05 - 10:44:16 -6317
Ellensburg 10:39:41 -22.1 Dark Up 22.0 280.7 Low 10:35:06 - 10:44:17 -6364
Yakima 10:39:42 -22.4 Dark Up 21.9 280.8 Low 10:35:07 - 10:44:18 -6409
Pasco 10:39:39 -22.0 Dark Up 20.9 281.9 Low 10:35:04 - 10:44:15 -6430
Toppenish/White Swan 10:39:42 -22.5 Dark Up 21.8 281.0 Low 10:35:07 - 10:44:18 -6431
PNWRO 10:39:39 -22.1 Dark Up 20.7 282.2 Low 10:35:04 - 10:44:15 -6454
George/Umatilla 10:39:41 -22.4 Dark Up 21.0 281.9 Low 10:35:05 - 10:44:16 -6469
Goldendale 10:39:43 -23.1 Dark Up 22.0 280.9 Low 10:35:07 - 10:44:18 -6495
The Dalles 10:39:43 -23.4 Dark Up 22.2 280.8 Low 10:35:07 - 10:44:18 -6523
Maupin 10:39:43 -23.7 Dark Up 22.0 281.0 Low 10:35:07 - 10:44:18 -6568
Madras/Culver 10:39:43 -24.1 Dark Up 22.0 281.2 Low 10:35:07 - 10:44:18 -6628
Redmond 10:39:43 -24.4 Dark Up 21.9 281.3 Low 10:35:07 - 10:44:18 -6667
Sisters 10:39:43 -24.6 Dark Up 22.2 281.1 Low 10:35:08 - 10:44:19 -6669
Bend 10:39:44 -24.7 Dark Up 22.0 281.3 Low 10:35:09 - 10:44:20 -6692
Oregon Observatory 10:39:44 -24.9 Dark Up 22.0 281.3 Low 10:35:09 - 10:44:20 -6712
La Pine/Gilchrist 10:39:44 -25.0 Dark Up 22.0 281.4 Low 10:35:09 - 10:44:20 -6735
North Lake 10:39:44 -25.1 Dark Up 21.5 281.9 Low 10:35:09 - 10:44:20 -6776
Niwot 10:39:30 -18.2 Dark Up 9.4 292.2 Really Low 10:34:54 - 10:44:05 -6799
Paisley 10:39:43 -25.3 Dark Up 21.1 282.3 Low 10:35:07 - 10:44:18 -6832
Chiloquin 10:39:45 -26.0 Dark Up 22.1 281.6 Low 10:35:10 - 10:44:21 -6859
Lakeview 10:39:43 -25.6 Dark Up 20.9 282.6 Low 10:35:08 - 10:44:19 -6884
Klamath Falls 10:39:46 -26.3 Dark Up 21.9 281.8 Low 10:35:11 - 10:44:22 -6895
Tulelake 10:39:45 -26.3 Dark Up 21.7 282.1 Low 10:35:09 - 10:44:20 -6921
Cedarville 10:39:44 -26.0 Dark Up 20.6 283.0 Low 10:35:08 - 10:44:19 -6953
Fall River/Burney 10:39:46 -26.9 Dark Up 21.4 282.5 Low 10:35:11 - 10:44:22 -7018
Susanville 10:39:45 -27.0 Dark Up 20.7 283.1 Low 10:35:10 - 10:44:21 -7078
Gimple 10:39:47 -27.3 Dark Up 20.8 283.1 Low 10:35:11 - 10:44:22 -7110
Greenville 10:39:46 -27.4 Dark Up 20.9 283.1 Low 10:35:10 - 10:44:21 -7110
Quincy 10:39:47 -27.5 Dark Up 20.8 283.1 Low 10:35:12 - 10:44:23 -7132
Portola 10:39:46 -27.4 Dark Up 20.4 283.5 Low 10:35:11 - 10:44:22 -7140
Reno 10:39:46 -27.2 Dark Up 19.9 283.9 Really Low 10:35:10 - 10:44:21 -7161
Carson City 10:39:45 -27.4 Dark Up 19.8 284.1 Really Low 10:35:09 - 10:44:20 -7199
Yerington 10:39:46 -27.2 Dark Up 19.3 284.5 Really Low 10:35:10 - 10:44:21 -7211
Gardnerville 10:39:45 -27.6 Dark Up 19.7 284.2 Really Low 10:35:09 - 10:44:20 -7224
Hawthorne 10:39:45 -27.3 Dark Up 18.7 284.9 Really Low 10:35:10 - 10:44:21 -7253
Tonopah 10:39:43 -26.8 Dark Up 17.6 285.9 Really Low 10:35:07 - 10:44:18 -7282
Lee Vining 10:39:45 -27.9 Dark Up 19.0 284.9 Really Low 10:35:09 - 10:44:20 -7320
Bishop 10:39:44 -27.9 Dark Up 18.3 285.4 Really Low 10:35:09 - 10:44:20 -7372
Beatty 10:39:43 -27.3 Dark Up 16.9 286.5 Really Low 10:35:07 - 10:44:18 -7396
Indian Springs 10:39:43 -26.9 Dark Up 16.0 287.1 Really Low 10:35:07 - 10:44:18 -7411
Lone Pine 10:39:45 -28.3 Dark Up 17.8 285.9 Really Low 10:35:09 - 10:44:20 -7447
Henderson 10:39:43 -26.8 Dark Up 15.3 287.6 Really Low 10:35:08 - 10:44:19 -7454
Patrick 10:39:42 -26.5 Dark Up 14.2 288.4 Really Low 10:35:07 - 10:44:18 -7497
Searchlight/Boulder City 10:39:43 -27.1 Dark Up 15.0 287.8 Really Low 10:35:07 - 10:44:18 -7512
DCO 10:39:41 -26.2 Dark Up 13.6 288.8 Really Low 10:35:05 - 10:44:16 -7513
Kingman/Dolan Springs 10:39:42 -26.7 Dark Up 14.3 288.3 Really Low 10:35:07 - 10:44:18 -7523
Laughlin/Bullhead City 10:39:43 -27.1 Dark Up 14.7 288.1 Really Low 10:35:07 - 10:44:18 -7536
Mohave Valley 10:39:43 -27.2 Dark Up 14.6 288.1 Really Low 10:35:07 - 10:44:18 -7564
Lake Havasu City 10:39:44 -27.3 Dark Up 14.3 288.4 Really Low 10:35:08 - 10:44:19 -7600
CPSLO 10:39:51 -30.7 Dark Up 19.5 285.0 Really Low 10:35:15 - 10:44:26 -7617
Parker 10:39:44 -27.5 Dark Up 14.1 288.5 Really Low 10:35:08 - 10:44:19 -7635
Blythe 10:39:44 -28.1 Dark Up 14.2 288.4 Really Low 10:35:09 - 10:44:20 -7695
Wildwood 10:39:49 -30.3 Dark Up 17.5 286.4 Really Low 10:35:14 - 10:44:25 -7715
Idyllwild 10:39:47 -29.3 Dark Up 15.9 287.4 Really Low 10:35:12 - 10:44:23 -7722
Calipatria 10:39:47 -29.0 Dark Up 14.8 288.1 Really Low 10:35:11 - 10:44:22 -7763
Yuma 10:39:46 -28.7 Dark Up 13.9 288.6 Really Low 10:35:10 - 10:44:21 -7789

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 523700, (2019/08/23 10:44UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 17.80 112
Tarazed        19:46:15.6 +10:36:48  2.7 14.39 115
2 Vul          19:17:43.7 +23:01:32  5.2  0.45 115
PPM 108713     19:17:11.2 +22:25:33  7.9  0.68 116
PPM 108676     19:15:41.3 +22:56:31  9.4  0.08 116
523700         19:15:47.1 +23:01:26 14.2       116
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:29:27 UT

Marc W. Buie, Southwest Research Institute

RECON