RECON: TNO occultation with 500829

Event between (500829) 13GT136 and star GA0760:04981698 with event index number of 308314

Geocentric closest approach at 2019/03/11 06:57:48 UTC

J2000 position of star is 14:27:08.0 -13:55:06
Equinox of date position of star is 14:28:10.6 -14:00:13
Stellar brightness G=16.6, use SENSEUP=128
Star is 175 degrees from the moon. Moon is 19% illuminated.
TNO apparent brightness V=24.4

[RECON map]
TNO is 48.9 AU from the Sun and 48.2 AU from the Earth.
The TNO is moving 15.6 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 282 seconds.
The 1-sigma cross-track error in the shadow position is 3162 km.
The sky-plane scale is 34984.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 12.8 sec chord
Diameter=81.5 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 500829, (2019/03/11 06:58UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:12.4 -11:15:39  1.0 15.36 160
27Bet Lib      15:18:02.5 -09:27:09  2.6 13.02 172
2 Lib          14:24:27.8 -11:48:03  6.2  2.38 174
PPM 228754     14:25:38.6 -14:10:03  7.6  0.64 174
PPM 228818     14:28:22.8 -14:04:02  9.7  0.08 175
500829         14:28:10.8 -14:00:14 16.6       175
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 3.2 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:03:03 -41.9 Dark Down 6.4 120.6 Really Low 06:48:03 - 07:18:03 3963
Summerland 07:03:05 -41.9 Dark Down 6.3 120.3 Really Low 06:48:05 - 07:18:05 3950
Penticton 07:03:05 -42.2 Dark Down 6.5 120.5 Really Low 06:48:05 - 07:18:05 3930
Okanagan Falls 07:03:06 -42.4 Dark Down 6.6 120.4 Really Low 06:48:06 - 07:18:06 3914
Oliver 07:03:07 -42.5 Dark Down 6.7 120.4 Really Low 06:48:07 - 07:18:07 3902
Anarchist Mountain Observatory 07:03:07 -42.7 Dark Down 6.9 120.6 Really Low 06:48:07 - 07:18:07 3893
Oroville 07:03:10 -42.8 Dark Down 6.9 120.5 Really Low 06:48:10 - 07:18:10 3885
Tonasket 07:03:08 -43.0 Dark Down 7.0 120.5 Really Low 06:48:08 - 07:18:08 3867
Okanogan 07:03:09 -43.3 Dark Down 7.1 120.3 Really Low 06:48:09 - 07:18:09 3836
Brewster 07:03:13 -43.5 Dark Down 7.1 120.2 Really Low 06:48:13 - 07:18:13 3810
Manson/Chelan 07:03:12 -43.6 Dark Down 7.0 119.9 Really Low 06:48:12 - 07:18:12 3783
Entiat 07:03:13 -43.8 Dark Down 7.1 119.8 Really Low 06:48:13 - 07:18:13 3764
Wenatchee 07:03:15 -44.0 Dark Down 7.2 119.7 Really Low 06:48:15 - 07:18:15 3741
Ellensburg 07:03:16 -44.3 Dark Down 7.2 119.5 Really Low 06:48:16 - 07:18:16 3701
Pasco 07:03:16 -45.4 Dark Down 8.5 120.5 Really Low 06:48:16 - 07:18:16 3676
Yakima 07:03:18 -44.7 Dark Down 7.4 119.4 Really Low 06:48:18 - 07:18:18 3667
PNWRO 07:03:15 -45.7 Dark Down 8.7 120.6 Really Low 06:48:15 - 07:18:15 3662
Toppenish/White Swan 07:03:18 -44.9 Dark Down 7.6 119.5 Really Low 06:48:18 - 07:18:18 3654
George/Umatilla 07:03:17 -45.6 Dark Down 8.5 120.3 Really Low 06:48:17 - 07:18:17 3643
Goldendale 07:03:20 -45.3 Dark Down 7.7 119.1 Really Low 06:48:20 - 07:18:20 3597
The Dalles 07:03:23 -45.4 Dark Down 7.6 118.8 Really Low 06:48:23 - 07:18:23 3569
Niwot 07:02:56 -53.6 Dark Down 20.2 130.2 Low 06:47:56 - 07:17:56 3564
SwRI 07:02:56 -53.7 Dark Down 20.3 130.1 Low 06:47:56 - 07:17:56 3553
Maupin 07:03:23 -45.8 Dark Down 7.8 118.9 Really Low 06:48:23 - 07:18:23 3536
Madras/Culver 07:03:24 -46.3 Dark Down 8.1 118.8 Really Low 06:48:24 - 07:18:24 3489
Redmond 07:03:26 -46.6 Dark Down 8.2 118.7 Really Low 06:48:26 - 07:18:26 3457
Sisters 07:03:27 -46.4 Dark Down 8.0 118.4 Really Low 06:48:27 - 07:18:27 3448
Bend 07:03:26 -46.7 Dark Down 8.2 118.6 Really Low 06:48:26 - 07:18:26 3435
Oregon Observatory 07:03:27 -46.8 Dark Down 8.2 118.4 Really Low 06:48:27 - 07:18:27 3416
La Pine/Gilchrist 07:03:28 -47.0 Dark Down 8.3 118.4 Really Low 06:48:28 - 07:18:28 3397
North Lake 07:03:28 -47.6 Dark Down 8.9 118.8 Really Low 06:48:28 - 07:18:28 3376
Paisley 07:03:29 -48.2 Dark Down 9.4 119.0 Really Low 06:48:29 - 07:18:29 3338
Lakeview 07:03:29 -48.7 Dark Down 9.8 119.0 Really Low 06:48:29 - 07:18:29 3299
Chiloquin 07:03:31 -47.9 Dark Down 8.6 118.0 Really Low 06:48:31 - 07:18:31 3291
Klamath Falls 07:03:33 -48.2 Dark Down 8.8 118.0 Really Low 06:48:33 - 07:18:33 3263
Tulelake 07:03:33 -48.5 Dark Down 9.1 118.2 Really Low 06:48:33 - 07:18:33 3248
Cedarville 07:03:31 -49.4 Dark Down 10.2 119.1 Really Low 06:48:31 - 07:18:31 3247
Fall River/Burney 07:03:35 -49.4 Dark Down 9.6 118.1 Really Low 06:48:35 - 07:18:35 3170
Susanville 07:03:36 -50.2 Dark Down 10.4 118.5 Really Low 06:48:36 - 07:18:36 3135
Gimple 07:03:37 -50.4 Dark Down 10.4 118.4 Really Low 06:48:37 - 07:18:37 3104
Greenville 07:03:36 -50.3 Dark Down 10.4 118.3 Really Low 06:48:36 - 07:18:36 3102
Portola 07:03:37 -50.8 Dark Down 10.8 118.6 Really Low 06:48:37 - 07:18:37 3086
Quincy 07:03:37 -50.5 Dark Down 10.5 118.3 Really Low 06:48:37 - 07:18:37 3084
Reno 07:03:36 -51.3 Dark Down 11.4 119.0 Really Low 06:48:36 - 07:18:36 3081
Yerington 07:03:36 -52.0 Dark Down 12.1 119.4 Really Low 06:48:36 - 07:18:36 3050
Carson City 07:03:36 -51.6 Dark Down 11.6 119.0 Really Low 06:48:36 - 07:18:36 3049
Gardnerville 07:03:37 -51.8 Dark Down 11.7 118.9 Really Low 06:48:37 - 07:18:37 3029
Hawthorne 07:03:36 -52.6 Dark Down 12.7 119.7 Really Low 06:48:36 - 07:18:36 3024
Tonopah 07:03:34 -53.5 Dark Down 13.9 120.6 Really Low 06:48:34 - 07:18:34 3024
Lee Vining 07:03:38 -52.9 Dark Down 12.7 119.2 Really Low 06:48:38 - 07:18:38 2959
Indian Springs 07:03:33 -55.3 Dark Down 15.7 121.3 Really Low 06:48:33 - 07:18:33 2937
Beatty 07:03:36 -54.7 Dark Down 14.8 120.6 Really Low 06:48:36 - 07:18:36 2933
Bishop 07:03:38 -53.7 Dark Down 13.5 119.6 Really Low 06:48:38 - 07:18:38 2926
Henderson 07:03:32 -56.0 Dark Down 16.5 121.7 Really Low 06:48:32 - 07:18:32 2910
Patrick 07:03:31 -56.9 Dark Down 17.6 122.3 Really Low 06:48:31 - 07:18:31 2888
DCO 07:03:30 -57.4 Dark Down 18.2 122.7 Really Low 06:48:30 - 07:18:30 2882
Lone Pine 07:03:39 -54.5 Dark Down 14.1 119.7 Really Low 06:48:39 - 07:18:39 2867
Kingman/Dolan Springs 07:03:32 -57.1 Dark Down 17.6 122.1 Really Low 06:48:32 - 07:18:32 2861
Searchlight/Boulder City 07:03:33 -56.6 Dark Down 16.8 121.6 Really Low 06:48:33 - 07:18:33 2859
Laughlin/Bullhead City 07:03:33 -57.0 Dark Down 17.2 121.8 Really Low 06:48:33 - 07:18:33 2843
Mohave Valley 07:03:33 -57.2 Dark Down 17.4 121.7 Really Low 06:48:33 - 07:18:33 2818
Lake Havasu City 07:03:33 -57.7 Dark Down 17.7 121.8 Really Low 06:48:33 - 07:18:33 2790
Parker 07:03:34 -58.0 Dark Down 17.9 121.7 Really Low 06:48:34 - 07:18:34 2758
Blythe 07:03:35 -58.4 Dark Down 18.0 121.3 Really Low 06:48:35 - 07:18:35 2700
CPSLO 07:03:47 -54.7 Dark Down 12.9 117.6 Really Low 06:48:47 - 07:18:47 2668
Idyllwild 07:03:41 -57.6 Dark Down 16.5 119.9 Really Low 06:48:41 - 07:18:41 2644
Calipatria 07:03:39 -58.6 Dark Down 17.6 120.6 Really Low 06:48:39 - 07:18:39 2625
Wildwood 07:03:45 -56.6 Dark Down 14.9 118.7 Really Low 06:48:45 - 07:18:45 2618
Yuma 07:03:37 -59.2 Dark Down 18.5 121.0 Really Low 06:48:37 - 07:18:37 2613

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 500829, (2019/03/11 06:58UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 15.36 160
27Bet Lib      15:17:00.3 -09:22:59  2.6 13.02 172
2 Lib          14:23:25.6 -11:42:52  6.2  2.38 174
PPM 228754     14:24:35.8 -14:04:53  7.6  0.64 174
PPM 228818     14:27:19.9 -13:58:55  9.7  0.08 175
500829         14:27:08.0 -13:55:06 16.6       175
Positions are for J2000

Event circumstances last updated at 2019/02/12 06:39:31 UT

Marc W. Buie, Southwest Research Institute

RECON