RECON: TNO occultation with 470593

Event between (470593) 08LP17 and star UC4-338-085718 with event index number of 190376

Geocentric closest approach at 2019/05/18 06:37:51 UTC

J2000 position of star is 16:47:18.3 -22:26:50
Equinox of date position of star is 16:48:21.0 -22:28:38
Stellar brightness R=15.4, use SENSEUP=128
Star is 24 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 30.3 AU from the Sun and 29.3 AU from the Earth.
The TNO is moving 21.5 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 100 seconds.
The 1-sigma cross-track error in the shadow position is 1319 km.
The sky-plane scale is 21272.9 km/arcsec.

The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 16.2 sec chord
Diameter=141.6 km assuming a 30% albedo -- 6.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 470593, (2019/05/18 06:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.9 -26:28:24  0.9  5.70  22
23Tau Sco      16:37:05.5 -28:15:17  2.8  6.32  24
PPM 266088     16:54:34.0 -20:26:47  5.7  2.48  25
PPM 265937     16:47:39.0 -22:39:44  8.4  0.26  24
PPM 265954     16:48:17.5 -22:32:19  9.9  0.07  24
470593         16:48:28.0 -22:28:51 15.4        25
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 12.1 km RECON observability=0.4 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 06:39:55 -19.6 Dark Up 11.9 146.6 Really Low 06:31:07 - 06:48:43 7334
Tonasket 06:39:56 -19.8 Dark Up 12.1 146.6 Really Low 06:31:08 - 06:48:44 7324
Okanogan 06:39:57 -20.1 Dark Up 12.3 146.4 Really Low 06:31:09 - 06:48:45 7307
Brewster 06:39:58 -20.3 Dark Up 12.4 146.2 Really Low 06:31:10 - 06:48:46 7291
Manson/Chelan 06:39:59 -20.4 Dark Up 12.5 145.9 Really Low 06:31:11 - 06:48:47 7274
Entiat 06:40:00 -20.6 Dark Up 12.6 145.8 Really Low 06:31:12 - 06:48:48 7263
Wenatchee 06:40:01 -20.8 Dark Up 12.8 145.7 Really Low 06:31:13 - 06:48:49 7249
Ellensburg 06:40:03 -21.2 Dark Up 13.1 145.5 Really Low 06:31:15 - 06:48:51 7226
Pasco 06:40:00 -22.2 Dark Up 14.2 146.6 Really Low 06:31:12 - 06:48:48 7218
PNWRO 06:40:00 -22.5 Dark Up 14.5 146.7 Really Low 06:31:12 - 06:48:48 7211
Yakima 06:40:03 -21.6 Dark Up 13.4 145.4 Really Low 06:31:15 - 06:48:51 7206
Toppenish/White Swan 06:40:03 -21.8 Dark Up 13.6 145.5 Really Low 06:31:15 - 06:48:51 7199
George/Umatilla 06:40:02 -22.5 Dark Up 14.4 146.4 Really Low 06:31:14 - 06:48:50 7198
Goldendale 06:40:06 -22.2 Dark Up 13.9 145.1 Really Low 06:31:18 - 06:48:54 7164
Niwot 06:39:25 -30.3 Dark Up 24.3 158.2 Low 06:30:37 - 06:48:13 7152
The Dalles 06:40:07 -22.4 Dark Up 14.0 144.7 Really Low 06:31:19 - 06:48:55 7145
Maupin 06:40:08 -22.8 Dark Up 14.4 144.8 Really Low 06:31:20 - 06:48:56 7126
Madras/Culver 06:40:10 -23.3 Dark Up 14.8 144.7 Really Low 06:31:22 - 06:48:58 7098
Redmond 06:40:10 -23.6 Dark Up 15.1 144.6 Really Low 06:31:22 - 06:48:58 7079
Sisters 06:40:11 -23.5 Dark Up 14.9 144.2 Really Low 06:31:23 - 06:48:59 7072
Bend 06:40:11 -23.8 Dark Up 15.2 144.4 Really Low 06:31:23 - 06:48:59 7065
Oregon Observatory 06:40:12 -23.9 Dark Up 15.3 144.3 Really Low 06:31:24 - 06:49:00 7053
La Pine/Gilchrist 06:40:12 -24.1 Dark Up 15.4 144.2 Really Low 06:31:24 - 06:49:00 7041
North Lake 06:40:11 -24.6 Dark Up 16.0 144.6 Really Low 06:31:23 - 06:48:59 7031
Paisley 06:40:11 -25.2 Dark Up 16.6 144.8 Really Low 06:31:23 - 06:48:59 7009
Lakeview 06:40:12 -25.8 Dark Up 17.1 144.9 Really Low 06:31:24 - 06:49:00 6985
Chiloquin 06:40:16 -25.0 Dark Up 16.2 143.7 Really Low 06:31:28 - 06:49:04 6974
Klamath Falls 06:40:16 -25.4 Dark Up 16.5 143.7 Really Low 06:31:28 - 06:49:04 6956
Cedarville 06:40:12 -26.4 Dark Up 17.7 145.0 Really Low 06:31:24 - 06:49:00 6953
Tulelake 06:40:16 -25.7 Dark Up 16.8 143.9 Really Low 06:31:28 - 06:49:04 6948
Fall River/Burney 06:40:17 -26.6 Dark Up 17.6 143.8 Really Low 06:31:29 - 06:49:05 6899
Susanville 06:40:16 -27.3 Dark Up 18.4 144.3 Really Low 06:31:28 - 06:49:04 6879
Gimple 06:40:17 -27.5 Dark Up 18.6 144.1 Really Low 06:31:29 - 06:49:05 6858
Greenville 06:40:17 -27.5 Dark Up 18.5 144.0 Really Low 06:31:29 - 06:49:05 6856
Portola 06:40:16 -28.0 Dark Up 19.0 144.4 Really Low 06:31:28 - 06:49:04 6848
Reno 06:40:15 -28.4 Dark Up 19.5 144.9 Really Low 06:31:27 - 06:49:03 6847
Quincy 06:40:17 -27.7 Dark Up 18.7 144.0 Really Low 06:31:29 - 06:49:05 6845
Yerington 06:40:14 -29.1 Dark Up 20.3 145.3 Low 06:31:26 - 06:49:02 6829
Carson City 06:40:16 -28.7 Dark Up 19.8 144.8 Really Low 06:31:28 - 06:49:04 6826
Tonopah 06:40:10 -30.4 Dark Up 21.9 146.8 Low 06:31:22 - 06:48:58 6815
Gardnerville 06:40:16 -29.0 Dark Up 20.0 144.8 Low 06:31:28 - 06:49:04 6813
Hawthorne 06:40:13 -29.7 Dark Up 20.9 145.7 Low 06:31:25 - 06:49:01 6812
Lee Vining 06:40:16 -30.1 Dark Up 21.1 145.2 Low 06:31:28 - 06:49:04 6768
Indian Springs 06:40:06 -32.2 Dark Up 23.8 147.8 Low 06:31:18 - 06:48:54 6756
Beatty 06:40:10 -31.7 Dark Up 23.0 147.0 Low 06:31:22 - 06:48:58 6753
Bishop 06:40:14 -30.8 Dark Up 21.9 145.6 Low 06:31:26 - 06:49:02 6747
Henderson 06:40:05 -32.9 Dark Up 24.5 148.3 Low 06:31:17 - 06:48:53 6737
Patrick 06:40:01 -33.7 Dark Up 25.5 149.2 Low 06:31:13 - 06:48:49 6721
DCO 06:39:59 -34.2 Dark Up 26.1 149.7 Low 06:31:11 - 06:48:47 6716
Lone Pine 06:40:14 -31.6 Dark Up 22.7 145.8 Low 06:31:26 - 06:49:02 6706
Kingman/Dolan Springs 06:40:03 -33.9 Dark Up 25.6 149.0 Low 06:31:15 - 06:48:51 6702
Searchlight/Boulder City 06:40:05 -33.5 Dark Up 25.0 148.2 Low 06:31:17 - 06:48:53 6702
Laughlin/Bullhead City 06:40:05 -33.8 Dark Up 25.4 148.5 Low 06:31:17 - 06:48:53 6690
Mohave Valley 06:40:05 -34.1 Dark Up 25.7 148.4 Low 06:31:17 - 06:48:53 6672
Lake Havasu City 06:40:04 -34.5 Dark Up 26.1 148.5 Low 06:31:16 - 06:48:52 6652
Parker 06:40:05 -34.9 Dark Up 26.4 148.5 Low 06:31:17 - 06:48:53 6629
Blythe 06:40:06 -35.3 Dark Up 26.8 148.1 Low 06:31:18 - 06:48:54 6588
CPSLO 06:40:25 -32.1 Dark Up 22.6 143.2 Low 06:31:37 - 06:49:13 6563
Idyllwild 06:40:14 -34.7 Dark Up 25.7 146.2 Low 06:31:26 - 06:49:02 6551
Calipatria 06:40:11 -35.6 Dark Up 26.8 147.1 Low 06:31:23 - 06:48:59 6535
Wildwood 06:40:19 -33.8 Dark Up 24.5 144.7 Low 06:31:31 - 06:49:07 6532
Yuma 06:40:08 -36.2 Dark Up 27.5 147.8 Low 06:31:20 - 06:48:56 6525

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 470593, (2019/05/18 06:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  5.70  22
23Tau Sco      16:35:53.0 -28:12:58  2.8  6.32  24
PPM 266088     16:53:25.2 -20:24:57  5.7  2.48  25
PPM 265937     16:46:29.2 -22:37:42  8.4  0.26  24
PPM 265954     16:47:07.7 -22:30:19  9.9  0.07  24
470593         16:47:18.3 -22:26:50 15.4        24
Positions are for J2000

Event circumstances last updated at 2017/06/01 18:13:31 UT

Marc W. Buie, Southwest Research Institute

RECON