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 16:48:22.8 -22:28:42
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 108 seconds.
The 1-sigma cross-track error in the shadow position is 1370 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 11.7 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 06:39:56 -19.6 Dark Up 11.9 146.6 Really Low 06:30:27 - 06:49:24 7329
Tonasket 06:39:57 -19.8 Dark Up 12.1 146.6 Really Low 06:30:28 - 06:49:25 7319
Okanogan 06:39:57 -20.1 Dark Up 12.3 146.4 Really Low 06:30:29 - 06:49:26 7301
Brewster 06:39:59 -20.3 Dark Up 12.4 146.2 Really Low 06:30:30 - 06:49:27 7285
Manson/Chelan 06:40:00 -20.4 Dark Up 12.5 145.9 Really Low 06:30:32 - 06:49:29 7268
Entiat 06:40:01 -20.6 Dark Up 12.6 145.8 Really Low 06:30:33 - 06:49:30 7257
Wenatchee 06:40:01 -20.8 Dark Up 12.8 145.7 Really Low 06:30:33 - 06:49:30 7243
Ellensburg 06:40:03 -21.2 Dark Up 13.1 145.5 Really Low 06:30:35 - 06:49:32 7220
Pasco 06:40:01 -22.2 Dark Up 14.2 146.6 Really Low 06:30:32 - 06:49:29 7212
PNWRO 06:40:01 -22.5 Dark Up 14.5 146.8 Really Low 06:30:32 - 06:49:29 7205
Yakima 06:40:04 -21.6 Dark Up 13.4 145.4 Really Low 06:30:36 - 06:49:33 7200
Toppenish/White Swan 06:40:04 -21.8 Dark Up 13.6 145.5 Really Low 06:30:36 - 06:49:33 7193
George/Umatilla 06:40:02 -22.5 Dark Up 14.4 146.4 Really Low 06:30:33 - 06:49:30 7192
Goldendale 06:40:06 -22.2 Dark Up 13.9 145.1 Really Low 06:30:38 - 06:49:35 7157
Niwot 06:39:25 -30.3 Dark Up 24.3 158.2 Low 06:29:57 - 06:48:54 7146
The Dalles 06:40:08 -22.4 Dark Up 14.0 144.7 Really Low 06:30:40 - 06:49:37 7139
Maupin 06:40:08 -22.8 Dark Up 14.4 144.8 Really Low 06:30:40 - 06:49:37 7120
Madras/Culver 06:40:10 -23.3 Dark Up 14.8 144.7 Really Low 06:30:41 - 06:49:38 7091
Redmond 06:40:11 -23.6 Dark Up 15.1 144.6 Really Low 06:30:42 - 06:49:39 7072
Sisters 06:40:12 -23.5 Dark Up 14.9 144.2 Really Low 06:30:43 - 06:49:40 7065
Bend 06:40:11 -23.8 Dark Up 15.2 144.4 Really Low 06:30:43 - 06:49:40 7058
Oregon Observatory 06:40:12 -23.9 Dark Up 15.3 144.3 Really Low 06:30:44 - 06:49:41 7046
La Pine/Gilchrist 06:40:13 -24.1 Dark Up 15.4 144.2 Really Low 06:30:44 - 06:49:41 7034
North Lake 06:40:12 -24.6 Dark Up 16.0 144.6 Really Low 06:30:43 - 06:49:40 7024
Paisley 06:40:12 -25.2 Dark Up 16.6 144.8 Really Low 06:30:43 - 06:49:40 7002
Lakeview 06:40:12 -25.8 Dark Up 17.1 144.9 Really Low 06:30:44 - 06:49:41 6978
Chiloquin 06:40:16 -25.0 Dark Up 16.2 143.7 Really Low 06:30:47 - 06:49:44 6966
Klamath Falls 06:40:16 -25.4 Dark Up 16.5 143.7 Really Low 06:30:48 - 06:49:45 6949
Cedarville 06:40:13 -26.4 Dark Up 17.7 145.0 Really Low 06:30:45 - 06:49:42 6946
Tulelake 06:40:16 -25.7 Dark Up 16.8 143.9 Really Low 06:30:48 - 06:49:45 6941
Fall River/Burney 06:40:18 -26.6 Dark Up 17.6 143.8 Really Low 06:30:49 - 06:49:46 6891
Susanville 06:40:17 -27.3 Dark Up 18.4 144.4 Really Low 06:30:48 - 06:49:45 6872
Gimple 06:40:18 -27.5 Dark Up 18.6 144.1 Really Low 06:30:49 - 06:49:46 6851
Greenville 06:40:18 -27.5 Dark Up 18.5 144.0 Really Low 06:30:50 - 06:49:47 6849
Portola 06:40:17 -28.0 Dark Up 19.0 144.4 Really Low 06:30:49 - 06:49:46 6841
Reno 06:40:16 -28.4 Dark Up 19.5 144.9 Really Low 06:30:47 - 06:49:44 6840
Quincy 06:40:18 -27.7 Dark Up 18.7 144.0 Really Low 06:30:50 - 06:49:47 6837
Yerington 06:40:15 -29.1 Dark Up 20.3 145.3 Low 06:30:46 - 06:49:43 6821
Carson City 06:40:16 -28.7 Dark Up 19.8 144.8 Really Low 06:30:48 - 06:49:45 6819
Tonopah 06:40:10 -30.4 Dark Up 21.9 146.8 Low 06:30:41 - 06:49:38 6808
Gardnerville 06:40:17 -29.0 Dark Up 20.0 144.8 Low 06:30:48 - 06:49:45 6805
Hawthorne 06:40:13 -29.7 Dark Up 20.9 145.7 Low 06:30:45 - 06:49:42 6805
Lee Vining 06:40:16 -30.1 Dark Up 21.1 145.2 Low 06:30:48 - 06:49:45 6760
Indian Springs 06:40:07 -32.2 Dark Up 23.8 147.8 Low 06:30:39 - 06:49:36 6749
Beatty 06:40:10 -31.7 Dark Up 23.0 147.0 Low 06:30:42 - 06:49:39 6746
Bishop 06:40:15 -30.8 Dark Up 21.9 145.6 Low 06:30:46 - 06:49:43 6739
Henderson 06:40:05 -32.9 Dark Up 24.5 148.3 Low 06:30:37 - 06:49:34 6730
Patrick 06:40:02 -33.7 Dark Up 25.5 149.2 Low 06:30:34 - 06:49:31 6714
DCO 06:40:00 -34.2 Dark Up 26.1 149.8 Low 06:30:32 - 06:49:29 6709
Lone Pine 06:40:15 -31.6 Dark Up 22.7 145.8 Low 06:30:47 - 06:49:44 6699
Kingman/Dolan Springs 06:40:04 -33.9 Dark Up 25.6 149.0 Low 06:30:35 - 06:49:32 6696
Searchlight/Boulder City 06:40:06 -33.5 Dark Up 25.0 148.2 Low 06:30:37 - 06:49:34 6695
Laughlin/Bullhead City 06:40:05 -33.8 Dark Up 25.4 148.5 Low 06:30:36 - 06:49:33 6684
Mohave Valley 06:40:05 -34.1 Dark Up 25.7 148.4 Low 06:30:37 - 06:49:34 6666
Lake Havasu City 06:40:05 -34.5 Dark Up 26.1 148.5 Low 06:30:37 - 06:49:34 6646
Parker 06:40:05 -34.9 Dark Up 26.4 148.5 Low 06:30:37 - 06:49:34 6623
Blythe 06:40:07 -35.3 Dark Up 26.8 148.1 Low 06:30:39 - 06:49:36 6582
CPSLO 06:40:25 -32.1 Dark Up 22.6 143.2 Low 06:30:57 - 06:49:54 6556
Idyllwild 06:40:15 -34.7 Dark Up 25.7 146.2 Low 06:30:47 - 06:49:44 6543
Calipatria 06:40:12 -35.6 Dark Up 26.8 147.1 Low 06:30:43 - 06:49:40 6529
Wildwood 06:40:21 -33.8 Dark Up 24.5 144.7 Low 06:30:52 - 06:49:49 6525
Yuma 06:40:09 -36.2 Dark Up 27.5 147.8 Low 06:30:40 - 06:49:37 6519

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 2017/12/06 18:57:04 UT

Marc W. Buie, Southwest Research Institute

RECON