RECON: TNO occultation with 01KD77

Event between 01KD77 and star GA0680:32087926 with event index number of 194661

Geocentric closest approach at 2019/06/25 09:24:49 UTC

J2000 position of star is 18:47:59.3 -21:32:36
Equinox of date position of star is 18:49:09.1 -21:31:14
Stellar brightness G=14.3, use SENSEUP=64
Star is 82 degrees from the moon. Moon is 50% illuminated.
TNO apparent brightness V=21.3

[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 448 seconds.
The 1-sigma cross-track error in the shadow position is 1917 km.
The sky-plane scale is 25738.8 km/arcsec.

The TNO has an absolute magnitude Hv=5.7
Diameter=446.7 km assuming a 5% albedo -- 18.7 sec chord
Diameter=182.4 km assuming a 30% albedo -- 7.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 01KD77, (2019/06/25 09:25UT)
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  83
01KD77         18:49:09.3 -21:31:14 14.3        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 2.0 sigma about the mid-time.
The median site spacing is 12.4 km RECON observability=0.8 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)
Kelowna 09:23:51 -14.4 AT Up 17.7 192.5 Really Low 09:08:51 - 09:38:51 7569
Summerland 09:23:51 -14.7 AT Up 18.0 192.3 Really Low 09:08:51 - 09:38:51 7561
Penticton 09:23:51 -14.8 AT Up 18.0 192.4 Really Low 09:08:51 - 09:38:51 7557
Okanagan Falls 09:23:51 -15.0 AT Up 18.2 192.4 Really Low 09:08:51 - 09:38:51 7550
Oliver 09:23:51 -15.1 AT Up 18.4 192.4 Really Low 09:08:51 - 09:38:51 7544
Anarchist Mountain Observatory 09:23:50 -15.2 AT Up 18.5 192.6 Really Low 09:08:50 - 09:38:50 7535
Oroville 09:23:50 -15.3 AT Up 18.6 192.5 Really Low 09:08:50 - 09:38:50 7533
Tonasket 09:23:50 -15.5 AT Up 18.8 192.5 Really Low 09:08:50 - 09:38:50 7523
Okanogan 09:23:50 -15.9 AT Up 19.2 192.4 Really Low 09:08:50 - 09:38:50 7512
Brewster 09:23:51 -16.2 AT Up 19.5 192.2 Really Low 09:08:51 - 09:38:51 7503
Manson/Chelan 09:23:52 -16.5 AT Up 19.7 191.9 Really Low 09:08:52 - 09:38:52 7499
Entiat 09:23:52 -16.7 AT Up 20.0 191.9 Really Low 09:08:52 - 09:38:52 7491
Wenatchee 09:23:52 -16.9 AT Up 20.2 191.8 Low 09:08:52 - 09:38:52 7481
Ellensburg 09:23:53 -17.4 AT Up 20.7 191.6 Low 09:08:53 - 09:38:53 7466
Yakima 09:23:52 -17.8 AT Up 21.1 191.6 Low 09:08:52 - 09:38:52 7449
Toppenish/White Swan 09:23:52 -17.9 AT Up 21.2 191.8 Low 09:08:52 - 09:38:52 7438
Goldendale 09:23:53 -18.6 Dark Up 21.8 191.4 Low 09:08:53 - 09:38:53 7419
Pasco 09:23:47 -17.8 AT Up 21.2 193.0 Low 09:08:47 - 09:38:47 7417
The Dalles 09:23:54 -18.9 Dark Up 22.1 191.1 Low 09:08:54 - 09:38:54 7413
George/Umatilla 09:23:48 -18.1 Dark Up 21.5 192.8 Low 09:08:48 - 09:38:48 7405
PNWRO 09:23:47 -17.9 AT Up 21.4 193.3 Low 09:08:47 - 09:38:47 7403
Maupin 09:23:52 -19.2 Dark Up 22.5 191.2 Low 09:08:52 - 09:38:52 7393
Madras/Culver 09:23:53 -19.8 Dark Up 23.1 191.2 Low 09:08:53 - 09:38:53 7368
Sisters 09:23:54 -20.2 Dark Up 23.4 190.8 Low 09:08:54 - 09:38:54 7358
Redmond 09:23:53 -20.1 Dark Up 23.4 191.2 Low 09:08:53 - 09:38:53 7352
Bend 09:23:54 -20.3 Dark Up 23.6 191.1 Low 09:08:54 - 09:38:54 7343
Oregon Observatory 09:23:54 -20.5 Dark Up 23.8 190.9 Low 09:08:54 - 09:38:54 7337
La Pine/Gilchrist 09:23:54 -20.7 Dark Up 24.0 190.9 Low 09:08:54 - 09:38:54 7328
North Lake 09:23:52 -21.0 Dark Up 24.4 191.5 Low 09:08:52 - 09:38:52 7299
Chiloquin 09:23:54 -21.9 Dark Up 25.2 190.6 Low 09:08:54 - 09:38:54 7278
Paisley 09:23:50 -21.4 Dark Up 24.9 192.0 Low 09:08:50 - 09:38:50 7267
Klamath Falls 09:23:54 -22.2 Dark Up 25.5 190.8 Low 09:08:54 - 09:38:54 7259
Tulelake 09:23:53 -22.4 Dark Up 25.7 191.1 Low 09:08:53 - 09:38:53 7242
Lakeview 09:23:50 -21.9 Dark Up 25.3 192.2 Low 09:08:50 - 09:38:50 7239
Cedarville 09:23:48 -22.5 Dark Up 26.0 192.4 Low 09:08:48 - 09:38:48 7203
Fall River/Burney 09:23:53 -23.2 Dark Up 26.6 191.2 Low 09:08:53 - 09:38:53 7194
Susanville 09:23:49 -23.6 Dark Up 27.1 192.1 Low 09:08:49 - 09:38:49 7151
Greenville 09:23:51 -24.0 Dark Up 27.4 191.8 Low 09:08:51 - 09:38:51 7140
Gimple 09:23:50 -23.9 Dark Up 27.4 191.9 Low 09:08:50 - 09:38:50 7139
Quincy 09:23:51 -24.1 Dark Up 27.6 191.8 Low 09:08:51 - 09:38:51 7129
Portola 09:23:49 -24.1 Dark Up 27.7 192.3 Low 09:08:49 - 09:38:49 7115
Reno 09:23:46 -24.2 Dark Up 27.8 193.0 Low 09:08:46 - 09:38:46 7092
Carson City 09:23:46 -24.6 Dark Up 28.2 193.1 Low 09:08:46 - 09:38:46 7072
Gardnerville 09:23:46 -24.8 Dark Up 28.4 193.2 Low 09:08:46 - 09:38:46 7057
Yerington 09:23:44 -24.6 Dark Up 28.3 193.8 Low 09:08:44 - 09:38:44 7052
Hawthorne 09:23:42 -24.8 Dark Up 28.6 194.4 Low 09:08:42 - 09:38:42 7018
Lee Vining 09:23:43 -25.5 Dark Up 29.2 193.9 Low 09:08:43 - 09:38:43 6992
Tonopah 09:23:37 -24.9 Dark Up 28.8 195.9 Low 09:08:37 - 09:38:37 6970
Bishop 09:23:41 -25.9 Dark Up 29.7 194.8 Low 09:08:41 - 09:38:41 6947
Lone Pine 09:23:39 -26.5 Dark Up 30.4 195.2 Up 09:08:39 - 09:38:39 6896
Beatty 09:23:35 -25.8 Dark Up 29.8 196.5 Low 09:08:35 - 09:38:35 6894
Niwot 09:22:59 -18.6 Dark Up 23.5 207.2 Low 09:07:59 - 09:37:59 6874
SwRI 09:23:00 -18.8 Dark Up 23.6 207.2 Low 09:08:00 - 09:38:00 6869
Indian Springs 09:23:31 -25.7 Dark Up 29.8 197.7 Low 09:08:31 - 09:38:31 6857
CPSLO 09:23:48 -28.4 Dark Up 32.1 192.7 Up 09:08:48 - 09:38:48 6855
Henderson 09:23:28 -26.0 Dark Up 30.2 198.5 Up 09:08:28 - 09:38:28 6813
Searchlight/Boulder City 09:23:28 -26.5 Dark Up 30.7 198.6 Up 09:08:28 - 09:38:28 6776
Patrick 09:23:24 -26.1 Dark Up 30.5 199.7 Up 09:08:24 - 09:38:24 6754
Laughlin/Bullhead City 09:23:26 -26.6 Dark Up 30.9 199.0 Up 09:08:26 - 09:38:26 6751
Wildwood 09:23:40 -28.9 Dark Up 32.9 195.0 Up 09:08:40 - 09:38:40 6748
Kingman/Dolan Springs 09:23:24 -26.4 Dark Up 30.7 199.6 Up 09:08:24 - 09:38:24 6744
Mohave Valley 09:23:26 -26.8 Dark Up 31.2 199.1 Up 09:08:26 - 09:38:26 6734
DCO 09:23:21 -26.1 Dark Up 30.6 200.5 Up 09:08:21 - 09:38:21 6722
Lake Havasu City 09:23:25 -27.1 Dark Up 31.5 199.4 Up 09:08:25 - 09:38:25 6704
Idyllwild 09:23:33 -28.6 Dark Up 32.8 197.1 Up 09:08:33 - 09:38:33 6695
Parker 09:23:25 -27.4 Dark Up 31.8 199.5 Up 09:08:25 - 09:38:25 6680
Blythe 09:23:25 -28.0 Dark Up 32.4 199.3 Up 09:08:25 - 09:38:25 6651
Calipatria 09:23:29 -28.8 Dark Up 33.1 198.5 Up 09:08:29 - 09:38:29 6635
Yuma 09:23:25 -28.8 Dark Up 33.3 199.5 Up 09:08:25 - 09:38:25 6591

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 09:25UT)
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 -21:08:18  9.8  0.43  83
01KD77         18:47:59.3 -21:32:36 14.3        82
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:20:10 UT

Marc W. Buie, Southwest Research Institute

RECON