RECON: TNO occultation with 07LE38

Event between 07LE38 and star GA1020:05091579 with event index number of 1176725

Geocentric closest approach at 2023/06/29 09:17:56 UTC

J2000 position of star is 18:00:15.8 +12:35:37
Equinox of date position of star is 18:01:09.8 +12:35:38
Stellar brightness G=15.2, use SENSEUP=128
Star is 57 degrees from the moon. Moon is 79% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 42.6 AU from the Sun and 41.7 AU from the Earth.
The TNO is moving 24.1 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 1034 seconds.
The 1-sigma cross-track error in the shadow position is 4485 km.
The sky-plane scale is 30274.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=227.0 km assuming a 5% albedo -- 9.4 sec chord
Diameter=92.7 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 07LE38, (2023/06/29 09:18UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:44.0 +38:48:23  0.0 27.43  78
Rasalhague     17:36:01.5 +12:32:41  2.1  6.18  52
PPM 134301     18:08:53.3 +13:04:33  6.4  1.90  59
PPM 134079     18:00:06.1 +12:26:18  8.3  0.34  57
PPM 134098     18:00:58.3 +12:48:55 10.2  0.24  57
07LE38         18:01:21.1 +12:35:38 15.2        57
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 0.9 sigma about the mid-time.
The median site spacing is 22.0 km RECON observability=1.0 and success probability=8.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 09:16:29 -15.0 AT Down 46.7 220.0 Up 09:01:29 - 09:31:29 -2899
Summerland 09:16:30 -15.3 AT Down 47.0 219.9 Up 09:01:30 - 09:31:30 -2926
Penticton 09:16:29 -15.4 AT Down 47.0 220.0 Up 09:01:29 - 09:31:29 -2932
Okanagan Falls 09:16:29 -15.5 AT Down 47.2 220.1 Up 09:01:29 - 09:31:29 -2949
Oliver 09:16:29 -15.7 AT Down 47.3 220.3 Up 09:01:29 - 09:31:29 -2963
Anarchist Mountain Observatory 09:16:28 -15.8 AT Down 47.4 220.7 Up 09:01:28 - 09:31:28 -2978
Oroville 09:16:28 -15.9 AT Down 47.4 220.6 Up 09:01:28 - 09:31:28 -2985
Tonasket 09:16:28 -16.1 AT Down 47.6 220.8 Up 09:01:28 - 09:31:28 -3006
Okanogan 09:16:28 -16.5 AT Down 47.9 220.8 Up 09:01:28 - 09:31:28 -3037
Brewster 09:16:28 -16.8 AT Down 48.2 220.8 Up 09:01:28 - 09:31:28 -3062
Manson/Chelan 09:16:29 -17.0 AT Down 48.5 220.4 Up 09:01:29 - 09:31:29 -3082
Entiat 09:16:29 -17.3 AT Down 48.7 220.5 Up 09:01:29 - 09:31:29 -3103
Wenatchee 09:16:29 -17.5 AT Down 49.0 220.6 Up 09:01:29 - 09:31:29 -3126
Ellensburg 09:16:29 -18.0 AT Down 49.4 220.6 Up 09:01:29 - 09:31:29 -3165
Yakima 09:16:29 -18.4 Dark Down 49.7 220.9 Up 09:01:29 - 09:31:29 -3202
Toppenish/White Swan 09:16:28 -18.5 Dark Down 49.8 221.3 Up 09:01:28 - 09:31:28 -3222
Pasco 09:16:24 -18.4 Dark Down 49.3 223.0 Up 09:01:24 - 09:31:24 -3229
PNWRO 09:16:23 -18.6 Dark Down 49.4 223.5 Up 09:01:23 - 09:31:23 -3251
George/Umatilla 09:16:24 -18.8 Dark Down 49.7 223.0 Up 09:01:24 - 09:31:24 -3261
Goldendale 09:16:28 -19.2 Dark Down 50.4 221.1 Up 09:01:28 - 09:31:28 -3274
The Dalles 09:16:29 -19.4 Dark Down 50.7 220.8 Up 09:01:29 - 09:31:29 -3296
Maupin 09:16:29 -19.8 Dark Down 51.0 221.3 Up 09:01:29 - 09:31:29 -3335
Madras/Culver 09:16:28 -20.4 Dark Down 51.4 221.7 Up 09:01:28 - 09:31:28 -3387
Sisters 09:16:29 -20.8 Dark Down 51.9 221.3 Up 09:01:29 - 09:31:29 -3420
Redmond 09:16:28 -20.7 Dark Down 51.7 221.9 Up 09:01:28 - 09:31:28 -3421
Bend 09:16:28 -20.9 Dark Down 52.0 221.9 Up 09:01:28 - 09:31:28 -3442
Oregon Observatory 09:16:28 -21.1 Dark Down 52.2 221.9 Up 09:01:28 - 09:31:28 -3459
La Pine/Gilchrist 09:16:28 -21.3 Dark Down 52.3 222.0 Up 09:01:28 - 09:31:28 -3478
North Lake 09:16:26 -21.6 Dark Down 52.4 223.2 Up 09:01:26 - 09:31:26 -3518
Paisley 09:16:24 -22.1 Dark Down 52.6 224.1 Up 09:01:24 - 09:31:24 -3570
Chiloquin 09:16:28 -22.5 Dark Down 53.3 222.4 Up 09:01:28 - 09:31:28 -3586
Lakeview 09:16:23 -22.5 Dark Down 52.8 224.9 Up 09:01:23 - 09:31:23 -3618
Klamath Falls 09:16:27 -22.8 Dark Up 53.5 222.9 Up 09:01:27 - 09:31:27 -3619
Tulelake 09:16:26 -23.0 Dark Down 53.6 223.5 Up 09:01:26 - 09:31:26 -3644
Cedarville 09:16:21 -23.1 Dark Down 53.2 225.7 Up 09:01:21 - 09:31:21 -3682
Fall River/Burney 09:16:25 -23.8 Dark Up 54.2 224.5 Up 09:01:25 - 09:31:25 -3733
Niwot 09:15:36 -19.6 Dark Down 44.8 244.2 Up 09:00:36 - 09:30:36 -3734
SwRI 09:15:37 -19.8 Dark Down 44.9 244.2 Up 09:00:37 - 09:30:37 -3745
Susanville 09:16:22 -24.3 Dark Down 54.3 226.1 Up 09:01:22 - 09:31:22 -3792
Gimple 09:16:22 -24.6 Dark Up 54.6 226.1 Up 09:01:22 - 09:31:22 -3820
Greenville 09:16:23 -24.6 Dark Up 54.6 226.0 Up 09:01:23 - 09:31:23 -3820
Quincy 09:16:22 -24.8 Dark Up 54.7 226.2 Up 09:01:22 - 09:31:22 -3840
Portola 09:16:21 -24.8 Dark Up 54.6 227.0 Up 09:01:21 - 09:31:21 -3851
Reno 09:16:18 -24.9 Dark Down 54.4 228.2 Up 09:01:18 - 09:31:18 -3875
Carson City 09:16:18 -25.2 Dark Down 54.6 228.6 Up 09:01:18 - 09:31:18 -3911
Yerington 09:16:16 -25.3 Dark Down 54.4 229.6 Up 09:01:16 - 09:31:16 -3928
Gardnerville 09:16:18 -25.5 Dark Down 54.7 228.9 Up 09:01:18 - 09:31:18 -3935
Hawthorne 09:16:14 -25.6 Dark Down 54.4 230.8 Up 09:01:14 - 09:31:14 -3972
Tonopah 09:16:09 -25.6 Dark Down 53.8 233.1 Up 09:01:09 - 09:31:09 -4013
Lee Vining 09:16:15 -26.2 Dark Down 55.0 230.8 Up 09:01:15 - 09:31:15 -4031
Bishop 09:16:11 -26.6 Dark Down 54.9 232.4 Up 09:01:11 - 09:31:11 -4088
Beatty 09:16:06 -26.6 Dark Down 54.2 234.9 Up 09:01:06 - 09:31:06 -4127
Indian Springs 09:16:02 -26.5 Dark Down 53.7 236.6 Up 09:01:02 - 09:31:02 -4155
Lone Pine 09:16:10 -27.2 Dark Down 55.2 233.7 Up 09:01:10 - 09:31:10 -4164
Henderson 09:16:00 -26.8 Dark Down 53.5 238.0 Up 09:01:00 - 09:31:00 -4206
Patrick 09:15:56 -27.0 Dark Down 53.0 240.0 Up 09:00:56 - 09:30:56 -4264
Searchlight/Boulder City 09:15:59 -27.3 Dark Down 53.7 238.8 Up 09:00:59 - 09:30:59 -4264
Kingman/Dolan Springs 09:15:55 -27.3 Dark Down 53.3 240.1 Up 09:00:55 - 09:30:55 -4287
DCO 09:15:53 -27.0 Dark Down 52.7 241.1 Up 09:00:53 - 09:30:53 -4291
Laughlin/Bullhead City 09:15:57 -27.5 Dark Down 53.7 239.5 Up 09:00:57 - 09:30:57 -4293
CPSLO 09:16:17 -29.1 Dark Up 57.6 231.8 Up 09:01:17 - 09:31:17 -4306
Mohave Valley 09:15:57 -27.7 Dark Down 53.8 239.8 Up 09:00:57 - 09:30:57 -4320
Lake Havasu City 09:15:56 -28.0 Dark Down 53.8 240.6 Up 09:00:56 - 09:30:56 -4360
Parker 09:15:56 -28.3 Dark Down 54.0 241.0 Up 09:00:56 - 09:30:56 -4396
Wildwood 09:16:09 -29.7 Dark Up 57.0 236.0 Up 09:01:09 - 09:31:09 -4423
Idyllwild 09:16:03 -29.5 Dark Down 55.9 238.8 Up 09:01:03 - 09:31:03 -4451
Blythe 09:15:56 -28.9 Dark Down 54.4 241.3 Up 09:00:56 - 09:30:56 -4452
Calipatria 09:15:59 -29.7 Dark Down 55.3 240.9 Up 09:00:59 - 09:30:59 -4508
Yuma 09:15:55 -29.7 Dark Down 54.9 242.4 Up 09:00:55 - 09:30:55 -4548

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 07LE38, (2023/06/29 09:18UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 27.43  78
Rasalhague     17:34:56.2 +12:33:32  2.1  6.18  52
PPM 134301     18:07:48.4 +13:04:16  6.4  1.90  59
PPM 134079     17:59:00.8 +12:26:19  8.3  0.34  57
PPM 134098     17:59:53.2 +12:48:54 10.2  0.24  57
07LE38         18:00:15.8 +12:35:37 15.2        57
Positions are for J2000

Event circumstances last updated at 2019/06/08 05:28:50 UT

Marc W. Buie, Southwest Research Institute

RECON