RECON: TNO occultation with 01KD77

Event between 01KD77 and star UC4-343-173207 with event index number of 194661

Geocentric closest approach at 2019/06/25 09:14:31 UTC

J2000 position of star is 18:47:59.3 -21:32:36
Equinox of date position of star is 18:49:02.2 -21:31:22
Stellar brightness R=14.7, use SENSEUP=128
Star is 82 degrees from the moon. Moon is 50% illuminated.
TNO apparent brightness V=21.2

[RECON map]
TNO is 36.5 AU from the Sun and 35.5 AU from the Earth.
The TNO is moving 23.9 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 378 seconds.
The 1-sigma cross-track error in the shadow position is 2021 km.
The sky-plane scale is 25740.1 km/arcsec.

The TNO has an absolute magnitude Hv=5.6
Diameter=461.3 km assuming a 5% albedo -- 19.3 sec chord
Diameter=188.3 km assuming a 30% albedo -- 7.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 01KD77, (2019/06/25 09:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.3 -26:28:25  0.9 31.93 113
Nunki          18:56:28.3 -26:16:15  2.0  5.04  81
30 Sgr         18:52:00.7 -22:08:18  6.3  0.91  82
PPM 268854     18:46:28.4 -20:58:49  6.6  0.83  83
PPM 268904     18:48:31.4 -21:06:56  9.8  0.43  82
01KD77         18:49:09.3 -21:31:14 14.7        82
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 2.4 sigma about the mid-time.
The median site spacing is 11.4 km RECON observability=0.9 and success probability=0.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:13:39 -15.8 AT Up 18.9 190.0 Really Low 08:58:39 - 09:28:39 7829
Tonasket 09:13:39 -16.1 AT Up 19.2 190.1 Really Low 08:58:39 - 09:28:39 7820
Okanogan 09:13:39 -16.4 AT Up 19.5 189.9 Really Low 08:58:39 - 09:28:39 7809
Brewster 09:13:40 -16.7 AT Up 19.8 189.7 Really Low 08:58:40 - 09:28:40 7800
Manson/Chelan 09:13:41 -17.0 AT Up 20.0 189.4 Low 08:58:41 - 09:28:41 7796
Entiat 09:13:41 -17.2 AT Up 20.3 189.3 Low 08:58:41 - 09:28:41 7787
Wenatchee 09:13:41 -17.5 AT Up 20.5 189.3 Low 08:58:41 - 09:28:41 7778
Ellensburg 09:13:41 -17.9 AT Up 21.0 189.1 Low 08:58:41 - 09:28:41 7763
Yakima 09:13:41 -18.3 Dark Up 21.4 189.1 Low 08:58:41 - 09:28:41 7746
Toppenish/White Swan 09:13:41 -18.5 Dark Up 21.6 189.3 Low 08:58:41 - 09:28:41 7735
Goldendale 09:13:42 -19.1 Dark Up 22.2 188.9 Low 08:58:42 - 09:28:42 7716
Pasco 09:13:37 -18.3 Dark Up 21.5 190.5 Low 08:58:37 - 09:28:37 7715
The Dalles 09:13:42 -19.4 Dark Up 22.4 188.5 Low 08:58:42 - 09:28:42 7709
George/Umatilla 09:13:37 -18.7 Dark Up 21.9 190.3 Low 08:58:37 - 09:28:37 7703
PNWRO 09:13:35 -18.5 Dark Up 21.8 190.8 Low 08:58:35 - 09:28:35 7702
Maupin 09:13:42 -19.8 Dark Up 22.8 188.7 Low 08:58:42 - 09:28:42 7690
Madras/Culver 09:13:42 -20.3 Dark Up 23.4 188.6 Low 08:58:42 - 09:28:42 7665
Sisters 09:13:44 -20.7 Dark Up 23.7 188.2 Low 08:58:44 - 09:28:44 7655
Redmond 09:13:42 -20.6 Dark Up 23.7 188.6 Low 08:58:42 - 09:28:42 7650
Bend 09:13:43 -20.9 Dark Up 24.0 188.5 Low 08:58:43 - 09:28:43 7641
Oregon Observatory 09:13:44 -21.1 Dark Up 24.1 188.4 Low 08:58:44 - 09:28:44 7635
La Pine/Gilchrist 09:13:43 -21.3 Dark Up 24.3 188.3 Low 08:58:43 - 09:28:43 7626
North Lake 09:13:42 -21.6 Dark Up 24.7 189.0 Low 08:58:42 - 09:28:42 7598
Chiloquin 09:13:44 -22.4 Dark Up 25.5 188.0 Low 08:58:44 - 09:28:44 7575
Paisley 09:13:39 -22.0 Dark Up 25.2 189.4 Low 08:58:39 - 09:28:39 7567
Klamath Falls 09:13:44 -22.7 Dark Up 25.8 188.1 Low 08:58:44 - 09:28:44 7558
Tulelake 09:13:42 -22.9 Dark Up 26.1 188.5 Low 08:58:42 - 09:28:42 7541
Lakeview 09:13:39 -22.5 Dark Up 25.7 189.6 Low 08:58:39 - 09:28:39 7539
Cedarville 09:13:39 -23.1 Dark Up 26.3 189.8 Low 08:58:39 - 09:28:39 7504
Fall River/Burney 09:13:42 -23.8 Dark Up 26.9 188.6 Low 08:58:42 - 09:28:42 7493
Susanville 09:13:39 -24.2 Dark Up 27.5 189.4 Low 08:58:39 - 09:28:39 7451
Greenville 09:13:41 -24.6 Dark Up 27.8 189.1 Low 08:58:41 - 09:28:41 7440
Gimple 09:13:40 -24.5 Dark Up 27.8 189.2 Low 08:58:40 - 09:28:40 7438
Quincy 09:13:41 -24.8 Dark Up 28.0 189.2 Low 08:58:41 - 09:28:41 7429
Portola 09:13:39 -24.8 Dark Up 28.1 189.7 Low 08:58:39 - 09:28:39 7416
Reno 09:13:36 -24.9 Dark Up 28.2 190.4 Low 08:58:36 - 09:28:36 7394
Carson City 09:13:36 -25.2 Dark Up 28.6 190.4 Low 08:58:36 - 09:28:36 7374
Gardnerville 09:13:37 -25.4 Dark Up 28.8 190.5 Low 08:58:37 - 09:28:37 7359
Yerington 09:13:34 -25.2 Dark Up 28.7 191.1 Low 08:58:34 - 09:28:34 7355
Hawthorne 09:13:32 -25.5 Dark Up 29.1 191.7 Low 08:58:32 - 09:28:32 7321
Lee Vining 09:13:34 -26.2 Dark Up 29.7 191.3 Low 08:58:34 - 09:28:34 7296
Tonopah 09:13:28 -25.6 Dark Up 29.3 193.2 Low 08:58:28 - 09:28:28 7276
Bishop 09:13:31 -26.6 Dark Up 30.2 192.1 Up 08:58:31 - 09:28:31 7251
Lone Pine 09:13:30 -27.2 Dark Up 30.8 192.5 Up 08:58:30 - 09:28:30 7201
Beatty 09:13:26 -26.6 Dark Up 30.3 193.8 Up 08:58:26 - 09:28:26 7200
Niwot 09:12:49 -19.7 Dark Up 24.3 204.8 Low 08:57:49 - 09:27:49 7191
Indian Springs 09:13:22 -26.5 Dark Up 30.4 195.0 Up 08:58:22 - 09:28:22 7164
CPSLO 09:13:39 -29.1 Dark Up 32.5 189.9 Up 08:58:39 - 09:28:39 7156
Henderson 09:13:19 -26.8 Dark Up 30.8 195.8 Up 08:58:19 - 09:28:19 7121
Searchlight/Boulder City 09:13:18 -27.3 Dark Up 31.3 196.0 Up 08:58:18 - 09:28:18 7085
Patrick 09:13:15 -27.0 Dark Up 31.1 197.1 Up 08:58:15 - 09:28:15 7064
Laughlin/Bullhead City 09:13:17 -27.5 Dark Up 31.5 196.4 Up 08:58:17 - 09:28:17 7060
Kingman/Dolan Springs 09:13:15 -27.3 Dark Up 31.4 196.9 Up 08:58:15 - 09:28:15 7053
Wildwood 09:13:31 -29.7 Dark Up 33.4 192.3 Up 08:58:31 - 09:28:31 7053
Mohave Valley 09:13:17 -27.7 Dark Up 31.8 196.4 Up 08:58:17 - 09:28:17 7042
DCO 09:13:12 -27.1 Dark Up 31.3 197.9 Up 08:58:12 - 09:28:12 7033
Lake Havasu City 09:13:16 -28.0 Dark Up 32.1 196.8 Up 08:58:16 - 09:28:16 7013
Idyllwild 09:13:24 -29.5 Dark Up 33.4 194.4 Up 08:58:24 - 09:28:24 7003
Parker 09:13:16 -28.3 Dark Up 32.5 196.9 Up 08:58:16 - 09:28:16 6990
Blythe 09:13:17 -28.9 Dark Up 33.0 196.6 Up 08:58:17 - 09:28:17 6961
Calipatria 09:13:19 -29.7 Dark Up 33.7 195.7 Up 08:58:19 - 09:28:19 6943
Yuma 09:13:16 -29.8 Dark Up 33.9 196.8 Up 08:58:16 - 09:28:16 6900

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 01KD77, (2019/06/25 09:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 31.93 113
Nunki          18:55:15.9 -26:17:49  2.0  5.04  81
30 Sgr         18:50:50.5 -22:09:44  6.3  0.91  82
PPM 268854     18:45:18.7 -21:00:07  6.6  0.83  83
PPM 268904     18:47:21.6 -21:08:17  9.8  0.43  82
01KD77         18:47:59.3 -21:32:36 14.7        82
Positions are for J2000

Event circumstances last updated at 2017/07/01 17:48:42 UT

Marc W. Buie, Southwest Research Institute

RECON