RECON: TNO occultation with 15875

Event between (15875) 96TP66 and star GA1160:01556335 with event index number of 244207

Geocentric closest approach at 2020/01/31 09:21:37 UTC

J2000 position of star is 05:45:28.7 +27:47:06
Equinox of date position of star is 05:46:38.3 +27:47:29
Stellar brightness G=16.8, use SENSEUP=128
Star is 65 degrees from the moon. Moon is 34% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 29.6 AU from the Sun and 28.9 AU from the Earth.
The TNO is moving 16.1 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 376 seconds.
The 1-sigma cross-track error in the shadow position is 1085 km.
The sky-plane scale is 20942.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 14.9 sec chord
Diameter=97.9 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15875, (2020/01/31 09:22UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.5 +16:32:53  0.8 19.62  47
Alnath         05:27:33.8 +28:37:21  1.6  4.31  61
PPM 094619     05:40:35.0 +29:13:30  5.9  1.97  64
PPM 094771     05:45:36.9 +27:44:20  8.4  0.25  65
PPM 094826     05:47:13.7 +27:57:32  9.9  0.20  65
PPM 094812     05:46:57.3 +27:51:43 10.2  0.08  65
15875          05:46:44.6 +27:47:31 16.8        65
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 22.4 km RECON observability=1.0 and success probability=4.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 09:17:19 -55.3 Dark Down 37.7 270.1 Up 09:02:19 - 09:32:19 -2588
Oroville 09:17:17 -55.8 Dark Down 37.6 270.7 Up 09:02:17 - 09:32:17 -2641
Tonasket 09:17:16 -56.0 Dark Down 37.6 270.9 Up 09:02:16 - 09:32:16 -2662
Okanogan 09:17:15 -56.4 Dark Down 37.7 271.0 Up 09:02:15 - 09:32:15 -2697
Brewster 09:17:14 -56.7 Dark Down 37.8 271.1 Up 09:02:14 - 09:32:14 -2728
Manson/Chelan 09:17:14 -57.0 Dark Down 38.1 271.0 Up 09:02:14 - 09:32:14 -2757
Entiat 09:17:14 -57.2 Dark Down 38.1 271.1 Up 09:02:14 - 09:32:14 -2779
Wenatchee 09:17:13 -57.4 Dark Down 38.2 271.2 Up 09:02:13 - 09:32:13 -2806
Ellensburg 09:17:12 -57.9 Dark Down 38.3 271.4 Up 09:02:12 - 09:32:12 -2850
Pasco 09:17:06 -58.0 Dark Down 37.3 272.9 Up 09:02:06 - 09:32:06 -2884
Yakima 09:17:12 -58.2 Dark Down 38.3 271.7 Up 09:02:12 - 09:32:12 -2889
PNWRO 09:17:05 -58.2 Dark Down 37.2 273.3 Up 09:02:05 - 09:32:05 -2901
Toppenish/White Swan 09:17:09 -58.4 Dark Down 38.2 272.0 Up 09:02:09 - 09:32:09 -2905
George/Umatilla 09:17:06 -58.4 Dark Down 37.5 273.0 Up 09:02:06 - 09:32:06 -2921
Goldendale 09:17:09 -59.0 Dark Down 38.5 272.1 Up 09:02:09 - 09:32:09 -2969
The Dalles 09:17:09 -59.3 Dark Down 38.7 272.0 Up 09:02:09 - 09:32:09 -3000
Niwot 09:16:17 -55.2 Dark Down 26.5 285.2 Low 09:01:17 - 09:31:17 -3025
Maupin 09:17:07 -59.6 Dark Down 38.6 272.4 Up 09:02:07 - 09:32:07 -3038
Madras/Culver 09:17:06 -60.1 Dark Down 38.6 272.8 Up 09:02:06 - 09:32:06 -3092
Redmond 09:17:05 -60.5 Dark Down 38.7 273.1 Up 09:02:05 - 09:32:05 -3128
Sisters 09:17:06 -60.6 Dark Down 39.0 272.8 Up 09:02:06 - 09:32:06 -3136
Bend 09:17:04 -60.7 Dark Down 38.8 273.2 Up 09:02:04 - 09:32:04 -3152
Oregon Observatory 09:17:04 -60.9 Dark Down 38.8 273.2 Up 09:02:04 - 09:32:04 -3173
La Pine/Gilchrist 09:17:03 -61.1 Dark Down 38.9 273.3 Up 09:02:03 - 09:32:03 -3194
North Lake 09:17:00 -61.3 Dark Down 38.4 274.1 Up 09:02:00 - 09:32:00 -3221
Paisley 09:16:58 -61.6 Dark Down 38.1 274.7 Up 09:01:58 - 09:31:58 -3265
Lakeview 09:16:55 -62.0 Dark Down 37.9 275.2 Up 09:01:55 - 09:31:55 -3309
Chiloquin 09:17:01 -62.2 Dark Down 39.1 274.0 Up 09:02:01 - 09:32:01 -3313
Klamath Falls 09:17:00 -62.5 Dark Down 39.0 274.3 Up 09:02:00 - 09:32:00 -3344
Tulelake 09:16:58 -62.6 Dark Down 38.8 274.7 Up 09:01:58 - 09:31:58 -3363
Cedarville 09:16:53 -62.4 Dark Down 37.8 275.8 Up 09:01:53 - 09:31:53 -3369
Fall River/Burney 09:16:55 -63.3 Dark Down 38.6 275.5 Up 09:01:55 - 09:31:55 -3451
Susanville 09:16:51 -63.6 Dark Down 38.0 276.4 Up 09:01:51 - 09:31:51 -3492
Gimple 09:16:51 -63.9 Dark Down 38.1 276.5 Up 09:01:51 - 09:31:51 -3526
Greenville 09:16:51 -63.9 Dark Down 38.2 276.5 Up 09:01:51 - 09:31:51 -3528
Portola 09:16:48 -64.0 Dark Down 37.8 277.0 Up 09:01:48 - 09:31:48 -3547
Quincy 09:16:50 -64.1 Dark Down 38.2 276.6 Up 09:01:50 - 09:31:50 -3548
Reno 09:16:46 -63.9 Dark Down 37.3 277.5 Up 09:01:46 - 09:31:46 -3555
Carson City 09:16:45 -64.2 Dark Down 37.2 277.8 Up 09:01:45 - 09:31:45 -3590
Yerington 09:16:43 -64.0 Dark Down 36.7 278.3 Up 09:01:43 - 09:31:43 -3590
Gardnerville 09:16:44 -64.4 Dark Down 37.2 278.0 Up 09:01:44 - 09:31:44 -3613
Hawthorne 09:16:40 -64.1 Dark Down 36.2 278.9 Up 09:01:40 - 09:31:40 -3620
Tonopah 09:16:35 -63.8 Dark Down 35.1 280.0 Up 09:01:35 - 09:31:35 -3624
Lee Vining 09:16:40 -64.8 Dark Down 36.5 279.1 Up 09:01:40 - 09:31:40 -3692
Indian Springs 09:16:27 -63.9 Dark Down 33.6 281.7 Up 09:01:27 - 09:31:27 -3722
Beatty 09:16:30 -64.3 Dark Down 34.5 281.0 Up 09:01:30 - 09:31:30 -3724
Bishop 09:16:37 -64.9 Dark Down 35.9 279.9 Up 09:01:37 - 09:31:37 -3729
Henderson 09:16:24 -63.9 Dark Down 33.0 282.4 Up 09:01:24 - 09:31:24 -3752
Patrick 09:16:19 -63.6 Dark Down 32.0 283.3 Up 09:01:19 - 09:31:19 -3777
DCO 09:16:17 -63.3 Dark Down 31.3 283.8 Up 09:01:17 - 09:31:17 -3783
Lone Pine 09:16:33 -65.3 Dark Down 35.5 280.6 Up 09:01:33 - 09:31:33 -3795
Kingman/Dolan Springs 09:16:19 -63.8 Dark Down 32.1 283.4 Up 09:01:19 - 09:31:19 -3805
Searchlight/Boulder City 09:16:22 -64.2 Dark Down 32.8 282.8 Up 09:01:22 - 09:31:22 -3807
Laughlin/Bullhead City 09:16:20 -64.2 Dark Down 32.5 283.2 Up 09:01:20 - 09:31:20 -3825
Mohave Valley 09:16:19 -64.3 Dark Down 32.4 283.3 Up 09:01:19 - 09:31:19 -3852
Lake Havasu City 09:16:18 -64.4 Dark Down 32.1 283.7 Up 09:01:18 - 09:31:18 -3884
Parker 09:16:17 -64.6 Dark Down 32.0 283.9 Up 09:01:17 - 09:31:17 -3918
Blythe 09:16:16 -65.1 Dark Down 32.1 284.1 Up 09:01:16 - 09:31:16 -3980
CPSLO 09:16:37 -67.7 Dark Down 37.3 280.3 Up 09:01:37 - 09:31:37 -4006
Idyllwild 09:16:22 -66.4 Dark Down 33.9 283.1 Up 09:01:22 - 09:31:22 -4040
Calipatria 09:16:18 -66.0 Dark Down 32.8 284.0 Up 09:01:18 - 09:31:18 -4062
Wildwood 09:16:28 -67.4 Dark Down 35.4 282.1 Up 09:01:28 - 09:31:28 -4065
Yuma 09:16:14 -65.7 Dark Down 31.9 284.6 Up 09:01:14 - 09:31:14 -4075

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 15875, (2020/01/31 09:22UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 19.62  47
Alnath         05:26:17.5 +28:36:23  1.6  4.31  61
PPM 094619     05:39:18.3 +29:12:55  5.9  1.97  64
PPM 094771     05:44:21.1 +27:43:53  8.4  0.25  65
PPM 094826     05:45:57.7 +27:57:09  9.9  0.20  65
PPM 094812     05:45:41.4 +27:51:19 10.2  0.08  65
15875          05:45:28.7 +27:47:06 16.8        65
Positions are for J2000

Event circumstances last updated at 2018/06/05 18:23:40 UT

Marc W. Buie, Southwest Research Institute

RECON