RECON: TNO occultation with 60608

Event between (60608) 00EE173 and star UC4-361-066054 with event index number of 119393

Geocentric closest approach at 2018/05/18 09:07:59 UTC

J2000 position of star is 13:49:54.9 -17:50:18
Equinox of date position of star is 13:50:51.8 -17:55:27
Stellar brightness R=15.2, use SENSEUP=128
Star is 114 degrees from the moon. Moon is 12% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 25.0 AU from the Sun and 24.1 AU from the Earth.
The TNO is moving 19.7 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 525 seconds.
The 1-sigma cross-track error in the shadow position is 5590 km.
The sky-plane scale is 17453.0 km/arcsec.

The TNO has an absolute magnitude Hv=8.5
Diameter=120.2 km assuming a 5% albedo -- 6.1 sec chord
Diameter=49.1 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 60608, (2018/05/18 09:08UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:09.8 -11:15:24  1.0  8.96 107
89 Vir         13:50:52.4 -18:13:30  5.0  0.30 115
PPM 227839     13:48:02.3 -17:55:09  8.4  0.69 114
PPM 227900     13:50:56.6 -17:55:46  9.2  0.01 114
60608          13:50:55.1 -17:55:45 15.2       115
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 1.7 sigma about the mid-time.
The median site spacing is 24.6 km RECON observability=0.1 and success probability=0.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:07:36 -19.6 Dark Down 11.7 224.4 Really Low 08:52:36 - 09:22:36 8473
Tonasket 09:07:36 -19.8 Dark Down 11.9 224.4 Really Low 08:52:36 - 09:22:36 8468
Okanogan 09:07:33 -20.1 Dark Down 12.2 224.3 Really Low 08:52:33 - 09:22:33 8459
Brewster 09:07:34 -20.4 Dark Down 12.5 224.2 Really Low 08:52:34 - 09:22:34 8452
Manson/Chelan 09:07:33 -20.7 Dark Down 12.8 223.9 Really Low 08:52:33 - 09:22:33 8444
Entiat 09:07:34 -20.9 Dark Down 13.0 223.9 Really Low 08:52:34 - 09:22:34 8438
Wenatchee 09:07:34 -21.2 Dark Down 13.3 223.8 Really Low 08:52:34 - 09:22:34 8432
Ellensburg 09:07:31 -21.6 Dark Down 13.7 223.7 Really Low 08:52:31 - 09:22:31 8420
Pasco 09:07:24 -22.0 Dark Down 13.5 225.0 Really Low 08:52:24 - 09:22:24 8410
Yakima 09:07:31 -22.0 Dark Down 14.0 223.8 Really Low 08:52:31 - 09:22:31 8409
PNWRO 09:07:24 -22.2 Dark Down 13.6 225.3 Really Low 08:52:24 - 09:22:24 8405
Toppenish/White Swan 09:07:28 -22.2 Dark Down 14.0 223.9 Really Low 08:52:28 - 09:22:28 8404
George/Umatilla 09:07:23 -22.4 Dark Down 13.9 224.9 Really Low 08:52:23 - 09:22:23 8400
Goldendale 09:07:28 -22.8 Dark Down 14.6 223.7 Really Low 08:52:28 - 09:22:28 8386
The Dalles 09:07:29 -23.1 Dark Down 15.0 223.4 Really Low 08:52:29 - 09:22:29 8377
Maupin 09:07:26 -23.5 Dark Down 15.2 223.6 Really Low 08:52:26 - 09:22:26 8366
Madras/Culver 09:07:26 -24.0 Dark Down 15.7 223.6 Really Low 08:52:26 - 09:22:26 8350
Redmond 09:07:24 -24.4 Dark Down 15.9 223.7 Really Low 08:52:24 - 09:22:24 8339
Sisters 09:07:25 -24.4 Dark Down 16.1 223.3 Really Low 08:52:25 - 09:22:25 8336
Bend 09:07:23 -24.6 Dark Down 16.2 223.6 Really Low 08:52:23 - 09:22:23 8331
Oregon Observatory 09:07:22 -24.8 Dark Down 16.4 223.5 Really Low 08:52:22 - 09:22:22 8325
La Pine/Gilchrist 09:07:22 -25.0 Dark Down 16.5 223.5 Really Low 08:52:22 - 09:22:22 8318
North Lake 09:07:18 -25.3 Dark Down 16.6 224.1 Really Low 08:52:18 - 09:22:18 8309
Paisley 09:07:15 -25.8 Dark Down 16.8 224.5 Really Low 08:52:15 - 09:22:15 8294
Lakeview 09:07:12 -26.2 Dark Down 17.1 224.7 Really Low 08:52:12 - 09:22:12 8278
Chiloquin 09:07:18 -26.2 Dark Down 17.5 223.4 Really Low 08:52:18 - 09:22:18 8278
Klamath Falls 09:07:17 -26.5 Dark Down 17.8 223.5 Really Low 08:52:17 - 09:22:17 8267
Tulelake 09:07:15 -26.7 Dark Down 17.8 223.8 Really Low 08:52:15 - 09:22:15 8261
Cedarville 09:07:08 -26.8 Dark Down 17.4 225.0 Really Low 08:52:08 - 09:22:08 8257
Niwot 09:06:24 -23.1 Dark Down 9.6 236.7 Really Low 08:51:24 - 09:21:24 8248
Fall River/Burney 09:07:11 -27.5 Dark Down 18.4 224.1 Really Low 08:52:11 - 09:22:11 8229
Susanville 09:07:07 -28.0 Dark Down 18.5 224.9 Really Low 08:52:07 - 09:22:07 8212
Gimple 09:07:08 -28.3 Dark Down 18.8 224.8 Really Low 08:52:08 - 09:22:08 8200
Greenville 09:07:07 -28.3 Dark Down 18.8 224.7 Really Low 08:52:07 - 09:22:07 8199
Quincy 09:07:06 -28.5 Dark Down 19.0 224.7 Really Low 08:52:06 - 09:22:06 8191
Portola 09:07:04 -28.5 Dark Down 18.8 225.1 Really Low 08:52:04 - 09:22:04 8191
Reno 09:07:01 -28.6 Dark Down 18.6 225.7 Really Low 08:52:01 - 09:22:01 8186
Carson City 09:07:00 -28.9 Dark Down 18.9 225.8 Really Low 08:52:00 - 09:22:00 8172
Yerington 09:06:57 -28.9 Dark Down 18.7 226.4 Really Low 08:51:57 - 09:21:57 8169
Gardnerville 09:06:59 -29.1 Dark Down 19.0 225.9 Really Low 08:51:59 - 09:21:59 8162
Hawthorne 09:06:54 -29.2 Dark Down 18.7 226.9 Really Low 08:51:54 - 09:21:54 8154
Tonopah 09:06:48 -29.3 Dark Down 18.2 228.1 Really Low 08:51:48 - 09:21:48 8145
Lee Vining 09:06:54 -29.9 Dark Down 19.4 226.7 Really Low 08:51:54 - 09:21:54 8128
Bishop 09:06:50 -30.3 Dark Down 19.4 227.4 Really Low 08:51:50 - 09:21:50 8107
Beatty 09:06:42 -30.2 Dark Down 18.7 228.8 Really Low 08:51:42 - 09:21:42 8098
Indian Springs 09:06:37 -30.2 Dark Down 18.3 229.7 Really Low 08:51:37 - 09:21:37 8090
Lone Pine 09:06:47 -30.9 Dark Down 19.7 227.8 Really Low 08:51:47 - 09:21:47 8077
Henderson 09:06:35 -30.4 Dark Down 18.2 230.3 Really Low 08:51:35 - 09:21:35 8069
Patrick 09:06:29 -30.6 Dark Down 17.9 231.3 Really Low 08:51:29 - 09:21:29 8046
Searchlight/Boulder City 09:06:31 -30.9 Dark Down 18.6 230.5 Really Low 08:51:31 - 09:21:31 8044
Kingman/Dolan Springs 09:06:28 -30.9 Dark Down 18.2 231.2 Really Low 08:51:28 - 09:21:28 8035
DCO 09:06:26 -30.6 Dark Down 17.7 231.9 Really Low 08:51:26 - 09:21:26 8035
Laughlin/Bullhead City 09:06:29 -31.1 Dark Down 18.5 230.9 Really Low 08:51:29 - 09:21:29 8031
Mohave Valley 09:06:28 -31.3 Dark Down 18.7 230.9 Really Low 08:51:28 - 09:21:28 8018
Lake Havasu City 09:06:25 -31.6 Dark Down 18.8 231.2 Really Low 08:51:25 - 09:21:25 8001
CPSLO 09:06:50 -32.8 Dark Down 22.1 226.1 Low 08:51:50 - 09:21:50 7996
Parker 09:06:23 -31.9 Dark Down 19.0 231.3 Really Low 08:51:23 - 09:21:23 7984
Blythe 09:06:23 -32.5 Dark Down 19.5 231.2 Really Low 08:51:23 - 09:21:23 7957
Wildwood 09:06:37 -33.4 Dark Down 21.7 228.1 Low 08:51:37 - 09:21:37 7956
Idyllwild 09:06:31 -33.1 Dark Down 20.8 229.6 Low 08:51:31 - 09:21:31 7953
Calipatria 09:06:25 -33.3 Dark Down 20.4 230.7 Low 08:51:25 - 09:21:25 7928
Yuma 09:06:19 -33.4 Dark Down 20.1 231.5 Low 08:51:19 - 09:21:19 7911

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 60608, (2018/05/18 09:08UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  8.96 107
89 Vir         13:49:52.2 -18:08:04  5.0  0.30 115
PPM 227839     13:47:02.2 -17:49:40  8.4  0.69 114
PPM 227900     13:49:56.4 -17:50:20  9.2  0.01 114
60608          13:49:54.9 -17:50:18 15.2       114
Positions are for J2000

Event circumstances last updated at 2017/05/18 18:03:37 UT

Marc W. Buie, Southwest Research Institute

RECON