RECON: TNO occultation with 04KV18

Event between 04KV18 and star GA0720:15133832 with event index number of 189909

Geocentric closest approach at 2019/05/16 10:15:15 UTC

J2000 position of star is 17:47:52.8 -16:13:33
Equinox of date position of star is 17:48:56.6 -16:13:52
Stellar brightness G=14.8, use SENSEUP=128
Star is 63 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=23.8

[RECON map]
TNO is 29.8 AU from the Sun and 28.9 AU from the Earth.
The TNO is moving 19.7 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 610 seconds.
The 1-sigma cross-track error in the shadow position is 1544 km.
The sky-plane scale is 20960.6 km/arcsec.

The TNO has an absolute magnitude Hv=9.0
Diameter=95.5 km assuming a 5% albedo -- 4.8 sec chord
Diameter=39.0 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 04KV18, (2019/05/16 10:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.9 -26:28:24  0.9 20.89  47
35Eta Oph      17:11:29.4 -15:44:51  2.6  9.03  54
PPM 233599     17:48:43.1 -14:43:53  5.9  1.50  63
PPM 233581     17:47:43.4 -16:00:35  8.4  0.38  63
PPM 233608     17:49:13.1 -16:00:44  9.7  0.23  63
04KV18         17:48:59.8 -16:13:53 14.8        64
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 1.5 sigma about the mid-time.
The median site spacing is 13.5 km RECON observability=0.9 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)
Penticton 10:18:16 -14.4 AT Up 24.2 182.0 Low 10:03:16 - 10:33:16 13380
Oroville 10:18:16 -14.8 AT Up 24.8 182.1 Low 10:03:16 - 10:33:16 13354
Tonasket 10:18:14 -15.0 AT Up 25.0 182.1 Low 10:03:14 - 10:33:14 13344
Okanogan 10:18:14 -15.3 AT Up 25.4 182.0 Low 10:03:14 - 10:33:14 13326
Brewster 10:18:16 -15.6 AT Up 25.7 181.8 Low 10:03:16 - 10:33:16 13311
Manson/Chelan 10:18:17 -15.9 AT Up 25.9 181.4 Low 10:03:17 - 10:33:17 13296
Entiat 10:18:17 -16.1 AT Up 26.1 181.3 Low 10:03:17 - 10:33:17 13285
Wenatchee 10:18:17 -16.4 AT Up 26.4 181.2 Low 10:03:17 - 10:33:17 13272
Ellensburg 10:18:18 -16.8 AT Up 26.8 181.0 Low 10:03:18 - 10:33:18 13249
Pasco 10:18:13 -16.9 AT Up 27.5 182.5 Low 10:03:13 - 10:33:13 13230
Yakima 10:18:18 -17.2 AT Up 27.2 181.0 Low 10:03:18 - 10:33:18 13228
PNWRO 10:18:11 -17.0 AT Up 27.7 182.7 Low 10:03:11 - 10:33:11 13220
Toppenish/White Swan 10:18:17 -17.3 AT Up 27.4 181.1 Low 10:03:17 - 10:33:17 13220
George/Umatilla 10:18:13 -17.2 AT Up 27.8 182.3 Low 10:03:13 - 10:33:13 13210
Goldendale 10:18:19 -17.9 AT Up 28.0 180.7 Low 10:03:19 - 10:33:19 13186
The Dalles 10:18:21 -18.2 Dark Up 28.2 180.3 Low 10:03:21 - 10:33:21 13169
Maupin 10:18:18 -18.5 Dark Up 28.6 180.4 Low 10:03:18 - 10:33:18 13149
Madras/Culver 10:18:18 -19.0 Dark Up 29.1 180.4 Low 10:03:18 - 10:33:18 13120
Redmond 10:18:19 -19.3 Dark Up 29.5 180.3 Low 10:03:19 - 10:33:19 13100
Sisters 10:18:21 -19.5 Dark Up 29.5 179.9 Low 10:03:21 - 10:33:21 13096
Bend 10:18:20 -19.5 Dark Up 29.7 180.2 Low 10:03:20 - 10:33:20 13086
Oregon Observatory 10:18:20 -19.7 Dark Up 29.9 180.0 Low 10:03:20 - 10:33:20 13075
La Pine/Gilchrist 10:18:20 -19.9 Dark Up 30.1 179.9 Up 10:03:20 - 10:33:20 13063
North Lake 10:18:17 -20.0 Dark Up 30.5 180.6 Up 10:03:17 - 10:33:17 13047
Niwot 10:17:11 -14.7 AT Up 31.7 198.1 Up 10:02:11 - 10:32:11 13042
Paisley 10:18:15 -20.4 Dark Up 31.1 181.0 Up 10:03:15 - 10:33:15 13021
Chiloquin 10:18:21 -21.0 Dark Up 31.2 179.5 Up 10:03:21 - 10:33:21 12996
Lakeview 10:18:15 -20.7 Dark Up 31.6 181.2 Up 10:03:15 - 10:33:15 12995
Klamath Falls 10:18:21 -21.3 Dark Up 31.5 179.6 Up 10:03:21 - 10:33:21 12977
Tulelake 10:18:20 -21.3 Dark Up 31.8 180.0 Up 10:03:20 - 10:33:20 12966
Cedarville 10:18:13 -21.1 Dark Up 32.2 181.4 Up 10:03:13 - 10:33:13 12960
Fall River/Burney 10:18:18 -22.1 Dark Up 32.7 180.1 Up 10:03:18 - 10:33:18 12914
Susanville 10:18:15 -22.3 Dark Up 33.4 180.9 Up 10:03:15 - 10:33:15 12887
Gimple 10:18:16 -22.6 Dark Up 33.6 180.7 Up 10:03:16 - 10:33:16 12867
Greenville 10:18:16 -22.6 Dark Up 33.6 180.6 Up 10:03:16 - 10:33:16 12866
Quincy 10:18:16 -22.8 Dark Up 33.8 180.6 Up 10:03:16 - 10:33:16 12854
Portola 10:18:14 -22.7 Dark Up 34.0 181.1 Up 10:03:14 - 10:33:14 12853
Reno 10:18:11 -22.6 Dark Up 34.2 181.9 Up 10:03:11 - 10:33:11 12846
Carson City 10:18:11 -22.9 Dark Up 34.6 181.9 Up 10:03:11 - 10:33:11 12825
Yerington 10:18:07 -22.7 Dark Up 34.7 182.6 Up 10:03:07 - 10:33:07 12822
Gardnerville 10:18:09 -23.0 Dark Up 34.8 181.9 Up 10:03:09 - 10:33:09 12810
Hawthorne 10:18:05 -22.9 Dark Up 35.2 183.2 Up 10:03:05 - 10:33:05 12800
Tonopah 10:17:59 -22.5 Dark Up 35.6 184.9 Up 10:02:59 - 10:32:59 12790
Lee Vining 10:18:06 -23.5 Dark Up 35.8 182.7 Up 10:03:06 - 10:33:06 12757
Bishop 10:18:03 -23.7 Dark Up 36.3 183.6 Up 10:03:03 - 10:33:03 12730
Beatty 10:17:55 -23.2 Dark Up 36.7 185.5 Up 10:02:55 - 10:32:55 12722
Indian Springs 10:17:51 -22.9 Dark Up 36.9 186.8 Up 10:02:51 - 10:32:51 12715
Henderson 10:17:47 -22.9 Dark Up 37.4 187.7 Up 10:02:47 - 10:32:47 12689
Lone Pine 10:18:01 -24.1 Dark Up 37.1 184.0 Up 10:03:01 - 10:33:01 12685
Patrick 10:17:42 -22.8 Dark Up 37.9 189.1 Up 10:02:42 - 10:32:42 12662
Searchlight/Boulder City 10:17:46 -23.3 Dark Up 38.0 187.8 Up 10:02:46 - 10:32:46 12652
DCO 10:17:38 -22.6 Dark Up 38.1 189.9 Up 10:02:38 - 10:32:38 12650
Kingman/Dolan Springs 10:17:43 -23.1 Dark Up 38.1 188.9 Up 10:02:43 - 10:32:43 12645
Laughlin/Bullhead City 10:17:45 -23.4 Dark Up 38.2 188.2 Up 10:02:45 - 10:32:45 12637
Mohave Valley 10:17:44 -23.6 Dark Up 38.5 188.3 Up 10:02:44 - 10:32:44 12618
Lake Havasu City 10:17:44 -23.7 Dark Up 38.8 188.6 Up 10:02:44 - 10:32:44 12594
Parker 10:17:42 -24.0 Dark Up 39.2 188.7 Up 10:02:42 - 10:32:42 12571
CPSLO 10:18:12 -26.4 Dark Up 38.5 180.9 Up 10:03:12 - 10:33:12 12560
Blythe 10:17:44 -24.5 Dark Up 39.7 188.4 Up 10:02:44 - 10:32:44 12531
Idyllwild 10:17:53 -25.6 Dark Up 39.8 185.8 Up 10:02:53 - 10:32:53 12510
Wildwood 10:18:02 -26.3 Dark Up 39.6 183.5 Up 10:03:02 - 10:33:02 12508
Calipatria 10:17:47 -25.4 Dark Up 40.3 187.3 Up 10:02:47 - 10:32:47 12484
Yuma 10:17:43 -25.2 Dark Up 40.7 188.5 Up 10:02:43 - 10:32:43 12465

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 04KV18, (2019/05/16 10:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.89  47
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.03  54
PPM 233599     17:47:36.7 -14:43:33  5.9  1.50  63
PPM 233581     17:46:36.4 -16:00:13  8.4  0.38  63
PPM 233608     17:48:06.1 -16:00:25  9.7  0.23  63
04KV18         17:47:52.8 -16:13:33 14.8        63
Positions are for J2000

Event circumstances last updated at 2018/06/11 23:12:18 UT

Marc W. Buie, Southwest Research Institute

RECON