RECON: TNO occultation with 04KV18

Event between 04KV18 and star UC4-369-105458 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 -16:13:34
Equinox of date position of star is 17:48:54.9 -16:13:52
Stellar brightness R=15.4, 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         17:48:59.9 -16:13:53 15.4        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 12.3 km RECON observability=1.0 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)
Oroville 10:16:01 -15.0 AT Up 24.8 181.5 Low 10:01:01 - 10:31:01 11556
Tonasket 10:16:00 -15.2 AT Up 25.1 181.5 Low 10:01:00 - 10:31:00 11545
Okanogan 10:16:01 -15.5 AT Up 25.4 181.4 Low 10:01:01 - 10:31:01 11528
Brewster 10:16:01 -15.8 AT Up 25.7 181.2 Low 10:01:01 - 10:31:01 11512
Manson/Chelan 10:16:03 -16.1 AT Up 25.9 180.8 Low 10:01:03 - 10:31:03 11498
Entiat 10:16:03 -16.4 AT Up 26.1 180.7 Low 10:01:03 - 10:31:03 11486
Wenatchee 10:16:03 -16.6 AT Up 26.4 180.6 Low 10:01:03 - 10:31:03 11473
Ellensburg 10:16:03 -17.0 AT Up 26.8 180.4 Low 10:01:03 - 10:31:03 11450
Pasco 10:15:57 -17.1 AT Up 27.5 181.9 Low 10:00:57 - 10:30:57 11431
Yakima 10:16:03 -17.4 AT Up 27.2 180.3 Low 10:01:03 - 10:31:03 11429
PNWRO 10:15:57 -17.2 AT Up 27.7 182.1 Low 10:00:57 - 10:30:57 11421
Toppenish/White Swan 10:16:03 -17.5 AT Up 27.4 180.5 Low 10:01:03 - 10:31:03 11421
George/Umatilla 10:15:59 -17.5 AT Up 27.8 181.7 Low 10:00:59 - 10:30:59 11411
Goldendale 10:16:04 -18.1 Dark Up 28.0 180.1 Low 10:01:04 - 10:31:04 11387
The Dalles 10:16:05 -18.4 Dark Up 28.2 179.7 Low 10:01:05 - 10:31:05 11370
Maupin 10:16:04 -18.7 Dark Up 28.6 179.8 Low 10:01:04 - 10:31:04 11350
Madras/Culver 10:16:04 -19.2 Dark Up 29.1 179.7 Low 10:01:04 - 10:31:04 11320
Redmond 10:16:04 -19.5 Dark Up 29.5 179.7 Low 10:01:04 - 10:31:04 11300
Sisters 10:16:06 -19.7 Dark Up 29.5 179.3 Low 10:01:06 - 10:31:06 11296
Bend 10:16:05 -19.8 Dark Up 29.7 179.5 Low 10:01:05 - 10:31:05 11287
Oregon Observatory 10:16:06 -20.0 Dark Up 29.9 179.4 Low 10:01:06 - 10:31:06 11276
La Pine/Gilchrist 10:16:07 -20.2 Dark Up 30.1 179.3 Up 10:01:07 - 10:31:07 11263
North Lake 10:16:03 -20.3 Dark Up 30.5 180.0 Up 10:01:03 - 10:31:03 11248
Niwot 10:14:57 -15.0 AT Up 31.9 197.5 Up 09:59:57 - 10:29:57 11246
Paisley 10:16:01 -20.6 Dark Up 31.1 180.4 Up 10:01:01 - 10:31:01 11222
Chiloquin 10:16:07 -21.2 Dark Up 31.2 178.9 Up 10:01:07 - 10:31:07 11196
Lakeview 10:16:00 -20.9 Dark Up 31.6 180.6 Up 10:01:00 - 10:31:00 11196
Klamath Falls 10:16:07 -21.5 Dark Up 31.5 179.0 Up 10:01:07 - 10:31:07 11178
Tulelake 10:16:05 -21.6 Dark Up 31.8 179.3 Up 10:01:05 - 10:31:05 11166
Cedarville 10:16:00 -21.4 Dark Up 32.2 180.8 Up 10:01:00 - 10:31:00 11160
Fall River/Burney 10:16:04 -22.3 Dark Up 32.7 179.4 Up 10:01:04 - 10:31:04 11114
Susanville 10:16:01 -22.5 Dark Up 33.4 180.3 Up 10:01:01 - 10:31:01 11087
Gimple 10:16:01 -22.8 Dark Up 33.6 180.0 Up 10:01:01 - 10:31:01 11068
Greenville 10:16:01 -22.9 Dark Up 33.6 179.9 Up 10:01:01 - 10:31:01 11067
Quincy 10:16:02 -23.0 Dark Up 33.8 179.9 Up 10:01:02 - 10:31:02 11054
Portola 10:15:59 -22.9 Dark Up 34.0 180.5 Up 10:00:59 - 10:30:59 11054
Reno 10:15:57 -22.8 Dark Up 34.2 181.2 Up 10:00:57 - 10:30:57 11047
Carson City 10:15:56 -23.1 Dark Up 34.6 181.2 Up 10:00:56 - 10:30:56 11025
Yerington 10:15:54 -23.0 Dark Up 34.8 182.0 Up 10:00:54 - 10:30:54 11022
Gardnerville 10:15:56 -23.3 Dark Up 34.8 181.3 Up 10:00:56 - 10:30:56 11011
Hawthorne 10:15:51 -23.1 Dark Up 35.2 182.6 Up 10:00:51 - 10:30:51 11001
Tonopah 10:15:46 -22.8 Dark Up 35.6 184.3 Up 10:00:46 - 10:30:46 10991
Lee Vining 10:15:53 -23.8 Dark Up 35.8 182.0 Up 10:00:53 - 10:30:53 10958
Bishop 10:15:50 -23.9 Dark Up 36.4 182.9 Up 10:00:50 - 10:30:50 10930
Beatty 10:15:41 -23.5 Dark Up 36.7 184.8 Up 10:00:41 - 10:30:41 10923
Indian Springs 10:15:37 -23.2 Dark Up 37.0 186.1 Up 10:00:37 - 10:30:37 10916
Henderson 10:15:33 -23.2 Dark Up 37.4 187.0 Up 10:00:33 - 10:30:33 10890
Lone Pine 10:15:47 -24.4 Dark Up 37.1 183.3 Up 10:00:47 - 10:30:47 10885
Patrick 10:15:27 -23.1 Dark Up 38.0 188.4 Up 10:00:27 - 10:30:27 10863
Searchlight/Boulder City 10:15:33 -23.6 Dark Up 38.0 187.1 Up 10:00:33 - 10:30:33 10853
DCO 10:15:24 -23.0 Dark Up 38.2 189.3 Up 10:00:24 - 10:30:24 10852
Kingman/Dolan Springs 10:15:29 -23.4 Dark Up 38.2 188.2 Up 10:00:29 - 10:30:29 10846
Laughlin/Bullhead City 10:15:30 -23.7 Dark Up 38.3 187.6 Up 10:00:30 - 10:30:30 10838
Mohave Valley 10:15:31 -23.9 Dark Up 38.5 187.6 Up 10:00:31 - 10:30:31 10819
Lake Havasu City 10:15:29 -24.0 Dark Up 38.9 187.9 Up 10:00:29 - 10:30:29 10796
Parker 10:15:28 -24.3 Dark Up 39.3 188.0 Up 10:00:28 - 10:30:28 10772
CPSLO 10:15:58 -26.7 Dark Up 38.5 180.2 Up 10:00:58 - 10:30:58 10760
Blythe 10:15:29 -24.8 Dark Up 39.8 187.7 Up 10:00:29 - 10:30:29 10732
Idyllwild 10:15:39 -25.9 Dark Up 39.9 185.1 Up 10:00:39 - 10:30:39 10711
Wildwood 10:15:47 -26.6 Dark Up 39.6 182.8 Up 10:00:47 - 10:30:47 10708
Calipatria 10:15:33 -25.7 Dark Up 40.4 186.6 Up 10:00:33 - 10:30:33 10685
Yuma 10:15:29 -25.6 Dark Up 40.7 187.8 Up 10:00:29 - 10:30:29 10666

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 -16:13:34 15.4        63
Positions are for J2000

Event circumstances last updated at 2017/12/06 18:56:30 UT

Marc W. Buie, Southwest Research Institute

RECON