RECON: TNO occultation with 471155

Event between (471155) 10GF65 and star UC4-287-086118 with event index number of 145814

Geocentric closest approach at 2018/05/06 08:24:04 UTC

J2000 position of star is 16:05:51.8 -32:46:18
Equinox of date position of star is 16:06:58.4 -32:49:03
Stellar brightness R=15.9, use SENSEUP=128
Star is 52 degrees from the moon. Moon is 66% illuminated.
TNO apparent brightness V=20.8

[RECON map]
TNO is 23.5 AU from the Sun and 22.5 AU from the Earth.
The TNO is moving 20.8 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 185 seconds.
The 1-sigma cross-track error in the shadow position is 1414 km.
The sky-plane scale is 16347.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 11.0 sec chord
Diameter=93.5 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 471155, (2018/05/06 08:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.1 -26:28:16  0.9  8.14  47
Eta Lup        16:01:20.6 -38:26:51  2.8  5.74  54
PPM 294617     16:05:28.3 -33:15:47  6.3  0.55  53
PPM 294607     16:04:58.8 -33:07:13  7.2  0.53  53
PPM 294650     16:06:59.9 -32:45:29  8.9  0.06  52
471155         16:07:02.1 -32:49:13 15.9        52
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 4.9 sigma about the mid-time.
The median site spacing is 10.2 km RECON observability=0.3 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 08:24:58 -24.2 Dark Down 7.8 171.1 Really Low 08:09:58 - 08:39:58 8261
Tonasket 08:24:58 -24.4 Dark Down 8.0 171.1 Really Low 08:09:58 - 08:39:58 8257
Okanogan 08:24:59 -24.7 Dark Down 8.3 171.0 Really Low 08:09:59 - 08:39:59 8249
Brewster 08:25:00 -25.0 Dark Down 8.6 170.8 Really Low 08:10:00 - 08:40:00 8242
Manson/Chelan 08:25:01 -25.3 Dark Down 8.7 170.5 Really Low 08:10:01 - 08:40:01 8233
Entiat 08:25:02 -25.5 Dark Down 8.9 170.4 Really Low 08:10:02 - 08:40:02 8228
Wenatchee 08:25:02 -25.7 Dark Down 9.2 170.3 Really Low 08:10:02 - 08:40:02 8221
Pasco 08:24:59 -26.8 Dark Up 10.4 171.3 Really Low 08:09:59 - 08:39:59 8211
Ellensburg 08:25:03 -26.2 Dark Down 9.6 170.1 Really Low 08:10:03 - 08:40:03 8210
PNWRO 08:24:58 -27.0 Dark Up 10.7 171.5 Really Low 08:09:58 - 08:39:58 8208
Yakima 08:25:04 -26.6 Dark Down 9.9 170.1 Really Low 08:10:04 - 08:40:04 8201
George/Umatilla 08:25:00 -27.1 Dark Up 10.7 171.1 Really Low 08:10:00 - 08:40:00 8201
Toppenish/White Swan 08:25:03 -26.8 Dark Down 10.2 170.2 Really Low 08:10:03 - 08:40:03 8198
Goldendale 08:25:05 -27.4 Dark Down 10.7 169.9 Really Low 08:10:05 - 08:40:05 8180
The Dalles 08:25:06 -27.6 Dark Down 10.9 169.6 Really Low 08:10:06 - 08:40:06 8170
Maupin 08:25:07 -28.0 Dark Down 11.3 169.6 Really Low 08:10:07 - 08:40:07 8161
Madras/Culver 08:25:07 -28.6 Dark Down 11.8 169.6 Really Low 08:10:07 - 08:40:07 8147
Niwot 08:24:07 -29.8 Dark Up 17.0 183.1 Really Low 08:09:07 - 08:39:07 8145
Redmond 08:25:07 -28.9 Dark Up 12.2 169.5 Really Low 08:10:07 - 08:40:07 8137
Sisters 08:25:09 -28.9 Dark Down 12.1 169.2 Really Low 08:10:09 - 08:40:09 8132
Bend 08:25:08 -29.2 Dark Up 12.3 169.4 Really Low 08:10:08 - 08:40:08 8129
Oregon Observatory 08:25:09 -29.3 Dark Up 12.5 169.3 Really Low 08:10:09 - 08:40:09 8123
La Pine/Gilchrist 08:25:08 -29.5 Dark Up 12.7 169.2 Really Low 08:10:08 - 08:40:08 8117
North Lake 08:25:07 -29.9 Dark Up 13.2 169.7 Really Low 08:10:07 - 08:40:07 8113
Paisley 08:25:06 -30.4 Dark Up 13.8 170.0 Really Low 08:10:06 - 08:40:06 8102
Lakeview 08:25:06 -30.9 Dark Up 14.3 170.1 Really Low 08:10:06 - 08:40:06 8089
Chiloquin 08:25:11 -30.7 Dark Up 13.7 168.9 Really Low 08:10:11 - 08:40:11 8079
Cedarville 08:25:05 -31.6 Dark Up 15.0 170.3 Really Low 08:10:05 - 08:40:05 8071
Klamath Falls 08:25:11 -31.0 Dark Up 14.1 168.9 Really Low 08:10:11 - 08:40:11 8070
Tulelake 08:25:10 -31.3 Dark Up 14.4 169.2 Really Low 08:10:10 - 08:40:10 8066
Fall River/Burney 08:25:11 -32.2 Dark Up 15.3 169.2 Really Low 08:10:11 - 08:40:11 8038
Susanville 08:25:08 -32.7 Dark Up 16.0 169.8 Really Low 08:10:08 - 08:40:08 8028
Gimple 08:25:09 -33.0 Dark Up 16.3 169.6 Really Low 08:10:09 - 08:40:09 8016
Greenville 08:25:09 -33.0 Dark Up 16.3 169.5 Really Low 08:10:09 - 08:40:09 8014
Portola 08:25:07 -33.3 Dark Up 16.6 169.9 Really Low 08:10:07 - 08:40:07 8010
Reno 08:25:05 -33.5 Dark Up 17.0 170.5 Really Low 08:10:05 - 08:40:05 8010
Quincy 08:25:09 -33.2 Dark Up 16.5 169.5 Really Low 08:10:09 - 08:40:09 8008
Yerington 08:25:03 -34.0 Dark Up 17.6 171.0 Really Low 08:10:03 - 08:40:03 7999
Carson City 08:25:05 -33.8 Dark Up 17.3 170.5 Really Low 08:10:05 - 08:40:05 7998
Tonopah 08:24:55 -34.6 Dark Up 18.8 172.6 Really Low 08:09:55 - 08:39:55 7990
Gardnerville 08:25:05 -34.1 Dark Up 17.6 170.5 Really Low 08:10:05 - 08:40:05 7989
Hawthorne 08:25:01 -34.3 Dark Up 18.1 171.4 Really Low 08:10:01 - 08:40:01 7989
Lee Vining 08:25:03 -35.0 Dark Up 18.6 171.0 Really Low 08:10:03 - 08:40:03 7962
Beatty 08:24:53 -35.7 Dark Up 19.9 173.0 Really Low 08:09:53 - 08:39:53 7950
Indian Springs 08:24:50 -35.8 Dark Up 20.4 173.9 Low 08:09:50 - 08:39:50 7949
Bishop 08:25:00 -35.5 Dark Up 19.3 171.6 Really Low 08:10:00 - 08:40:00 7948
Henderson 08:24:47 -36.2 Dark Up 21.0 174.5 Low 08:09:47 - 08:39:47 7935
Lone Pine 08:24:59 -36.2 Dark Up 20.1 171.8 Low 08:09:59 - 08:39:59 7922
Patrick 08:24:43 -36.6 Dark Up 21.7 175.5 Low 08:09:43 - 08:39:43 7920
DCO 08:24:40 -36.7 Dark Up 22.0 176.1 Low 08:09:40 - 08:39:40 7914
Searchlight/Boulder City 08:24:47 -36.7 Dark Up 21.5 174.5 Low 08:09:47 - 08:39:47 7912
Kingman/Dolan Springs 08:24:44 -36.8 Dark Up 21.9 175.3 Low 08:09:44 - 08:39:44 7909
Laughlin/Bullhead City 08:24:46 -36.9 Dark Up 21.9 174.8 Low 08:09:46 - 08:39:46 7902
Mohave Valley 08:24:46 -37.2 Dark Up 22.1 174.8 Low 08:09:46 - 08:39:46 7891
Lake Havasu City 08:24:45 -37.5 Dark Up 22.5 175.0 Low 08:09:45 - 08:39:45 7876
Parker 08:24:45 -37.9 Dark Up 22.9 175.1 Low 08:09:45 - 08:39:45 7861
Blythe 08:24:46 -38.4 Dark Up 23.4 174.8 Low 08:09:46 - 08:39:46 7835
CPSLO 08:25:11 -37.8 Dark Up 21.0 169.5 Low 08:10:11 - 08:40:11 7832
Idyllwild 08:24:54 -38.7 Dark Up 23.1 172.9 Low 08:09:54 - 08:39:54 7818
Wildwood 08:25:02 -38.7 Dark Up 22.5 171.2 Low 08:10:02 - 08:40:02 7809
Calipatria 08:24:50 -39.1 Dark Up 23.8 173.9 Low 08:09:50 - 08:39:50 7802
Yuma 08:24:46 -39.3 Dark Up 24.3 174.7 Low 08:09:46 - 08:39:46 7792

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 471155, (2018/05/06 08:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.14  47
Eta Lup        16:00:07.3 -38:23:48  2.8  5.74  54
PPM 294617     16:04:17.8 -33:12:50  6.3  0.55  53
PPM 294607     16:03:48.4 -33:04:15  7.2  0.53  53
PPM 294650     16:05:49.7 -32:42:34  8.9  0.06  52
471155         16:05:51.8 -32:46:18 15.9        52
Positions are for J2000

Event circumstances last updated at 2017/05/18 18:02:36 UT

Marc W. Buie, Southwest Research Institute

RECON