RECON: TNO occultation with 01KD77

Event between 01KD77 and star UC4-342-142369 with event index number of 122523

Geocentric closest approach at 2017/08/23 06:21:48 UTC

J2000 position of star is 18:28:06.0 -21:46:02
Equinox of date position of star is 18:29:08.6 -21:45:19
Stellar brightness R=14.2, use SENSEUP=64
Star is 107 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 36.3 AU from the Sun and 35.7 AU from the Earth.
The TNO is moving 12.1 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 522 seconds.
The 1-sigma cross-track error in the shadow position is 2044 km.
The sky-plane scale is 25907.7 km/arcsec.

The TNO has an absolute magnitude Hv=5.6
Diameter=461.3 km assuming a 5% albedo -- 38.2 sec chord
Diameter=188.3 km assuming a 30% albedo -- 15.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 01KD77, (2017/08/23 06:22UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:29.5 -26:28:11  0.9 27.42  80
Nunki          18:56:21.5 -26:16:24  2.0  7.68 113
21 Sgr         18:26:24.1 -20:31:51  4.1  1.38 106
PPM 268487     18:30:54.5 -20:56:23  8.3  0.91 107
PPM 268440     18:29:03.6 -21:34:39  8.9  0.18 107
01KD77         18:29:09.6 -21:45:18 14.2       107
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 18.2 km RECON observability=0.6 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 06:18:07 -25.6 Dark Down 14.5 208.5 Really Low 06:03:07 - 06:33:07 7827
Tonasket 06:18:06 -25.8 Dark Down 14.7 208.5 Really Low 06:03:06 - 06:33:06 7817
Okanogan 06:18:05 -26.1 Dark Down 15.0 208.4 Really Low 06:03:05 - 06:33:05 7804
Brewster 06:18:06 -26.3 Dark Down 15.3 208.3 Really Low 06:03:06 - 06:33:06 7796
Manson/Chelan 06:18:07 -26.3 Dark Down 15.6 208.0 Really Low 06:03:07 - 06:33:07 7794
Entiat 06:18:06 -26.5 Dark Down 15.8 207.9 Really Low 06:03:06 - 06:33:06 7785
Wenatchee 06:18:06 -26.7 Dark Down 16.1 207.9 Really Low 06:03:06 - 06:33:06 7775
Ellensburg 06:18:07 -27.0 Dark Down 16.5 207.7 Really Low 06:03:07 - 06:33:07 7760
Yakima 06:18:06 -27.3 Dark Down 16.9 207.8 Really Low 06:03:06 - 06:33:06 7740
Toppenish/White Swan 06:18:04 -27.6 Dark Down 17.0 207.9 Really Low 06:03:04 - 06:33:04 7726
Goldendale 06:18:05 -27.9 Dark Down 17.7 207.6 Really Low 06:03:05 - 06:33:05 7708
The Dalles 06:18:07 -28.0 Dark Down 18.0 207.3 Really Low 06:03:07 - 06:33:07 7704
Pasco 06:17:58 -28.1 Dark Down 16.7 209.1 Really Low 06:02:58 - 06:32:58 7693
George/Umatilla 06:17:58 -28.3 Dark Down 17.1 208.9 Really Low 06:02:58 - 06:32:58 7681
Maupin 06:18:03 -28.4 Dark Down 18.3 207.5 Really Low 06:03:03 - 06:33:03 7681
PNWRO 06:17:54 -28.4 Dark Down 16.9 209.3 Really Low 06:02:54 - 06:32:54 7676
Madras/Culver 06:18:03 -28.8 Dark Down 18.8 207.5 Really Low 06:03:03 - 06:33:03 7654
Sisters 06:18:05 -28.9 Dark Down 19.3 207.2 Really Low 06:03:05 - 06:33:05 7647
Redmond 06:18:03 -29.1 Dark Down 19.1 207.5 Really Low 06:03:03 - 06:33:03 7637
Bend 06:18:02 -29.2 Dark Down 19.4 207.4 Really Low 06:03:02 - 06:33:02 7629
Oregon Observatory 06:18:03 -29.3 Dark Down 19.6 207.3 Really Low 06:03:03 - 06:33:03 7623
La Pine/Gilchrist 06:18:03 -29.5 Dark Down 19.8 207.3 Really Low 06:03:03 - 06:33:03 7613
North Lake 06:17:59 -30.1 Dark Down 20.0 207.9 Really Low 06:02:59 - 06:32:59 7577
Chiloquin 06:18:02 -30.3 Dark Down 20.9 207.2 Low 06:03:02 - 06:33:02 7561
Klamath Falls 06:18:01 -30.6 Dark Down 21.2 207.3 Low 06:03:01 - 06:33:01 7540
Paisley 06:17:55 -30.7 Dark Down 20.3 208.4 Low 06:02:55 - 06:32:55 7539
Tulelake 06:18:00 -30.9 Dark Down 21.3 207.6 Low 06:03:00 - 06:33:00 7519
Lakeview 06:17:53 -31.2 Dark Down 20.7 208.6 Low 06:02:53 - 06:32:53 7507
Cedarville 06:17:51 -31.8 Dark Down 21.2 208.9 Low 06:02:51 - 06:32:51 7466
Fall River/Burney 06:17:55 -31.7 Dark Down 22.1 207.9 Low 06:02:55 - 06:32:55 7465
Susanville 06:17:51 -32.6 Dark Down 22.4 208.7 Low 06:02:51 - 06:32:51 7412
Greenville 06:17:52 -32.7 Dark Down 22.7 208.4 Low 06:02:52 - 06:32:52 7403
Gimple 06:17:51 -32.7 Dark Down 22.7 208.5 Low 06:02:51 - 06:32:51 7401
Quincy 06:17:52 -32.9 Dark Down 22.9 208.5 Low 06:02:52 - 06:32:52 7391
Portola 06:17:48 -33.2 Dark Down 22.9 208.9 Low 06:02:48 - 06:32:48 7373
Reno 06:17:44 -33.6 Dark Down 22.8 209.6 Low 06:02:44 - 06:32:44 7341
Carson City 06:17:43 -33.9 Dark Down 23.2 209.7 Low 06:02:43 - 06:32:43 7319
Gardnerville 06:17:43 -34.2 Dark Down 23.3 209.8 Low 06:02:43 - 06:32:43 7303
Yerington 06:17:39 -34.4 Dark Down 23.1 210.3 Low 06:02:39 - 06:32:39 7292
Hawthorne 06:17:34 -35.0 Dark Down 23.3 210.8 Low 06:02:34 - 06:32:34 7251
Lee Vining 06:17:36 -35.3 Dark Down 24.0 210.5 Low 06:02:36 - 06:32:36 7228
Tonopah 06:17:26 -35.9 Dark Down 23.1 212.2 Low 06:02:26 - 06:32:26 7187
Bishop 06:17:31 -36.1 Dark Down 24.2 211.3 Low 06:02:31 - 06:32:31 7172
Lone Pine 06:17:28 -36.8 Dark Down 24.7 211.8 Low 06:02:28 - 06:32:28 7114
Beatty 06:17:20 -37.1 Dark Down 23.9 212.9 Low 06:02:20 - 06:32:20 7101
CPSLO 06:17:41 -36.9 Dark Down 26.9 209.8 Low 06:02:41 - 06:32:41 7093
Indian Springs 06:17:13 -37.8 Dark Down 23.7 213.9 Low 06:02:13 - 06:32:13 7051
Henderson 06:17:09 -38.5 Dark Down 23.8 214.6 Low 06:02:09 - 06:32:09 6997
Niwot 06:16:29 -37.4 Dark Down 16.0 221.8 Really Low 06:01:29 - 06:31:29 6997
Wildwood 06:17:26 -38.8 Dark Down 27.1 211.9 Low 06:02:26 - 06:32:26 6960
Searchlight/Boulder City 06:17:06 -39.0 Dark Down 24.3 214.8 Low 06:02:06 - 06:32:06 6958
Laughlin/Bullhead City 06:17:03 -39.4 Dark Down 24.4 215.2 Low 06:02:03 - 06:32:03 6927
Patrick 06:16:59 -39.5 Dark Down 23.9 215.7 Low 06:01:59 - 06:31:59 6925
Kingman/Dolan Springs 06:17:01 -39.6 Dark Down 24.1 215.6 Low 06:02:01 - 06:32:01 6915
Mohave Valley 06:17:02 -39.7 Dark Down 24.6 215.3 Low 06:02:02 - 06:32:02 6909
Idyllwild 06:17:13 -39.9 Dark Down 26.5 213.7 Low 06:02:13 - 06:32:13 6887
DCO 06:16:54 -40.0 Dark Down 23.8 216.4 Low 06:01:54 - 06:31:54 6885
Lake Havasu City 06:17:01 -40.1 Dark Down 24.8 215.6 Low 06:02:01 - 06:32:01 6874
Parker 06:17:00 -40.4 Dark Down 25.1 215.7 Low 06:02:00 - 06:32:00 6849
Blythe 06:17:01 -40.8 Dark Down 25.7 215.6 Low 06:02:01 - 06:32:01 6820
Calipatria 06:17:05 -40.9 Dark Down 26.5 214.9 Low 06:02:05 - 06:32:05 6811
Yuma 06:16:58 -41.6 Dark Down 26.4 215.8 Low 06:01:58 - 06:31:58 6756

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, (2017/08/23 06:22UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 27.42  80
Nunki          18:55:15.9 -26:17:49  2.0  7.68 113
21 Sgr         18:25:21.1 -20:32:31  4.1  1.38 106
PPM 268487     18:29:51.3 -20:57:10  8.3  0.91 107
PPM 268440     18:28:00.1 -21:35:23  8.9  0.18 107
01KD77         18:28:06.0 -21:46:02 14.2       107
Positions are for J2000

Event circumstances last updated at 2017/05/13 17:32:22 UT

Marc W. Buie, Southwest Research Institute

RECON