RECON: TNO occultation with 60620

Event between (60620) 00FD8 and star UC4-436-059010 with event index number of 119398

Geocentric closest approach at 2018/06/11 08:35:32 UTC

J2000 position of star is 14:08:20.8 -02:58:11
Equinox of date position of star is 14:09:16.6 -03:03:15
Stellar brightness R=13.8, use SENSEUP=64
Star is 164 degrees from the moon. Moon is 9% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 36.7 AU from the Sun and 36.0 AU from the Earth.
The TNO is moving 14.5 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 584 seconds.
The 1-sigma cross-track error in the shadow position is 3528 km.
The sky-plane scale is 26126.6 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 19.9 sec chord
Diameter=117.7 km assuming a 30% albedo -- 8.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 60620, (2018/06/11 08:36UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:10.0 -11:15:25  1.0 13.47 156
PPM 197087     14:00:46.7 -03:38:20  6.4  2.21 162
PPM 197292     14:12:18.3 -03:25:29  7.8  0.83 165
PPM 179232     14:09:21.2 -03:01:26  9.0  0.04 164
60620          14:09:18.2 -03:03:24 13.8       164
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 16.5 km RECON observability=0.9 and success probability=7.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 08:32:46 -17.5 AT Down 19.0 241.5 Really Low 08:17:46 - 08:47:46 1194
Tonasket 08:32:45 -17.8 AT Down 19.1 241.5 Really Low 08:17:45 - 08:47:45 1181
Okanogan 08:32:43 -18.1 Dark Down 19.3 241.5 Really Low 08:17:43 - 08:47:43 1161
Brewster 08:32:43 -18.4 Dark Down 19.6 241.4 Really Low 08:17:43 - 08:47:43 1145
Manson/Chelan 08:32:42 -18.7 Dark Down 19.9 241.2 Really Low 08:17:42 - 08:47:42 1131
Entiat 08:32:42 -18.9 Dark Down 20.0 241.2 Low 08:17:42 - 08:47:42 1119
Wenatchee 08:32:40 -19.1 Dark Down 20.2 241.2 Low 08:17:40 - 08:47:40 1103
Ellensburg 08:32:39 -19.6 Dark Down 20.6 241.1 Low 08:17:39 - 08:47:39 1078
Yakima 08:32:36 -20.0 Dark Down 20.8 241.2 Low 08:17:36 - 08:47:36 1054
Toppenish/White Swan 08:32:35 -20.2 Dark Down 20.8 241.4 Low 08:17:35 - 08:47:35 1043
Pasco 08:32:30 -20.2 Dark Down 20.1 242.5 Low 08:17:30 - 08:47:30 1042
PNWRO 08:32:28 -20.4 Dark Down 20.0 242.8 Low 08:17:28 - 08:47:28 1029
George/Umatilla 08:32:30 -20.5 Dark Down 20.4 242.4 Low 08:17:30 - 08:47:30 1021
Goldendale 08:32:33 -20.8 Dark Down 21.3 241.2 Low 08:17:33 - 08:47:33 1007
The Dalles 08:32:33 -21.0 Dark Down 21.6 241.0 Low 08:17:33 - 08:47:33 992
Maupin 08:32:30 -21.4 Dark Down 21.8 241.2 Low 08:17:30 - 08:47:30 967
Madras/Culver 08:32:27 -22.0 Dark Down 22.1 241.4 Low 08:17:27 - 08:47:27 933
Redmond 08:32:26 -22.3 Dark Down 22.3 241.5 Low 08:17:26 - 08:47:26 910
Sisters 08:32:27 -22.3 Dark Down 22.5 241.1 Low 08:17:27 - 08:47:27 909
Bend 08:32:25 -22.6 Dark Down 22.5 241.4 Low 08:17:25 - 08:47:25 896
Oregon Observatory 08:32:25 -22.7 Dark Down 22.6 241.4 Low 08:17:25 - 08:47:25 884
La Pine/Gilchrist 08:32:24 -23.0 Dark Down 22.8 241.4 Low 08:17:24 - 08:47:24 871
North Lake 08:32:20 -23.3 Dark Down 22.6 242.0 Low 08:17:20 - 08:47:20 847
Paisley 08:32:16 -23.8 Dark Down 22.6 242.5 Low 08:17:16 - 08:47:16 813
Chiloquin 08:32:19 -24.1 Dark Down 23.6 241.5 Low 08:17:19 - 08:47:19 797
Lakeview 08:32:13 -24.3 Dark Down 22.8 242.9 Low 08:17:13 - 08:47:13 781
Klamath Falls 08:32:17 -24.4 Dark Down 23.7 241.7 Low 08:17:17 - 08:47:17 775
Tulelake 08:32:15 -24.7 Dark Down 23.6 242.0 Low 08:17:15 - 08:47:15 759
Cedarville 08:32:08 -25.0 Dark Down 23.0 243.2 Low 08:17:08 - 08:47:08 739
Niwot 08:31:21 -23.3 Dark Down 13.0 254.7 Really Low 08:16:21 - 08:46:21 703
Fall River/Burney 08:32:10 -25.6 Dark Down 24.0 242.4 Low 08:17:10 - 08:47:10 698
Susanville 08:32:05 -26.1 Dark Down 23.8 243.3 Low 08:17:05 - 08:47:05 660
Gimple 08:32:04 -26.4 Dark Down 24.1 243.2 Low 08:17:04 - 08:47:04 640
Greenville 08:32:04 -26.4 Dark Down 24.1 243.1 Low 08:17:04 - 08:47:04 640
Quincy 08:32:03 -26.6 Dark Down 24.2 243.2 Low 08:17:03 - 08:47:03 626
Portola 08:32:01 -26.7 Dark Down 23.9 243.6 Low 08:17:01 - 08:47:01 620
Reno 08:31:57 -26.9 Dark Down 23.6 244.2 Low 08:16:57 - 08:46:57 605
Carson City 08:31:55 -27.2 Dark Down 23.8 244.4 Low 08:16:55 - 08:46:55 580
Yerington 08:31:52 -27.4 Dark Down 23.4 245.0 Low 08:16:52 - 08:46:52 571
Gardnerville 08:31:54 -27.5 Dark Down 23.8 244.5 Low 08:16:54 - 08:46:54 564
Hawthorne 08:31:48 -27.8 Dark Down 23.2 245.5 Low 08:16:48 - 08:46:48 541
Tonopah 08:31:41 -28.0 Dark Down 22.4 246.8 Low 08:16:41 - 08:46:41 516
Lee Vining 08:31:47 -28.4 Dark Down 23.8 245.4 Low 08:16:47 - 08:46:47 497
Bishop 08:31:42 -28.9 Dark Down 23.6 246.2 Low 08:16:42 - 08:46:42 459
Beatty 08:31:34 -29.1 Dark Down 22.6 247.5 Low 08:16:34 - 08:46:34 434
Indian Springs 08:31:29 -29.2 Dark Down 21.9 248.4 Low 08:16:29 - 08:46:29 416
Lone Pine 08:31:37 -29.6 Dark Down 23.6 246.7 Low 08:16:37 - 08:46:37 405
Henderson 08:31:24 -29.6 Dark Down 21.6 249.1 Low 08:16:24 - 08:46:24 380
Patrick 08:31:17 -30.0 Dark Down 21.0 250.1 Low 08:16:17 - 08:46:17 338
Searchlight/Boulder City 08:31:21 -30.2 Dark Down 21.8 249.3 Low 08:16:21 - 08:46:21 337
Kingman/Dolan Springs 08:31:17 -30.3 Dark Down 21.2 250.0 Low 08:16:17 - 08:46:17 321
DCO 08:31:14 -30.1 Dark Down 20.6 250.7 Low 08:16:14 - 08:46:14 319
Laughlin/Bullhead City 08:31:19 -30.4 Dark Down 21.6 249.7 Low 08:16:19 - 08:46:19 317
Mohave Valley 08:31:17 -30.6 Dark Down 21.7 249.8 Low 08:16:17 - 08:46:17 296
CPSLO 08:31:39 -31.2 Dark Down 26.1 245.3 Low 08:16:39 - 08:46:39 291
Lake Havasu City 08:31:14 -31.0 Dark Down 21.7 250.1 Low 08:16:14 - 08:46:14 267
Parker 08:31:13 -31.3 Dark Down 21.8 250.2 Low 08:16:13 - 08:46:13 240
Wildwood 08:31:27 -32.1 Dark Down 25.1 247.3 Low 08:16:27 - 08:46:27 212
Blythe 08:31:11 -31.9 Dark Down 22.2 250.2 Low 08:16:11 - 08:46:11 197
Idyllwild 08:31:18 -32.2 Dark Down 23.8 248.8 Low 08:16:18 - 08:46:18 195
Calipatria 08:31:12 -32.6 Dark Down 23.1 249.8 Low 08:16:12 - 08:46:12 154
Yuma 08:31:07 -32.8 Dark Down 22.5 250.5 Low 08:16:07 - 08:46:07 125

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 60620, (2018/06/11 08:36UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 13.47 156
PPM 197087     13:59:49.3 -03:33:00  6.4  2.21 162
PPM 197292     14:11:20.8 -03:20:19  7.8  0.83 165
PPM 179232     14:08:23.8 -02:56:13  9.0  0.04 164
60620          14:08:20.8 -02:58:11 13.8       164
Positions are for J2000

Event circumstances last updated at 2017/12/04 18:44:02 UT

Marc W. Buie, Southwest Research Institute

RECON