ARLK050 follows

ZCZC SK50

QST de W1AW

Keplerian Bulletin 50 ARLK050

From ARRL Headquarters

Newington, CT July 7, 2026

To all radio amateurs

SB KEP ARL ARLK050

ARLK050 Keplerian data

Special thanks to Space-track.org for the following Keplerian data.

Decode 2-line elsets with the following key:

1 AAAAAU 00 0 0 BBBBB.BBBBBBBB .CCCCCCCC 00000-0 00000-0 0 DDDZ

2 AAAAA EEE.EEEE FFF.FFFF GGGGGGG HHH.HHHH III.IIII JJ.JJJJJJJJKKKKKZ

KEY: A-CATALOGNUM B-EPOCHTIME C-DECAY D-ELSETNUM E-INCLINATION F-RAAN

G-ECCENTRICITY H-ARGPERIGEE I-MNANOM J-MNMOTION K-ORBITNUM Z-CHECKSUM

0 AO-7

1 07530U 74089B 26188.51478832 -.00000046 00000-0 49488-5 0 9995 2 07530 101.9901 201.9731 0012665 92.5590 74.3678 12.53698425363069

0 ISS

1 25544U 98067A 26188.50835634 .00005806 00000-0 11369-3 0 9991 2 25544 51.6304 199.5144 0006687 267.6545 92.3678 15.48933372574901

0 SO-50

1 27607U 02058C 26188.11499616 .00000749 00000-0 10582-3 0 9998 2 27607 64.5520 67.3282 0074752 258.7570 100.5128 14.83088031267416

0 AO-73

1 39444U 13066AE 26187.87556615 .00006051 00000-0 37306-3 0 9991 2 39444 97.8282 159.7358 0037536 134.9216 225.5068 15.09744377682630

0 AO-91

1 43017U 17073E 26188.05056824 .00005556 00000-0 24356-3 0 9992 2 43017 97.4678 54.8599 0148160 259.9195 98.5293 15.12990086468395

0 PO-101

1 43678U 18084H 26188.57573698 .00001997 00000-0 16328-3 0 9993 2 43678 98.1217 25.6751 0013076 107.6279 252.6373 15.00543973419271

0 QO-100

1 43700U 18090A 26188.57792480 .00000159 00000-0 00000-0 0 9994 2 43700 0.0166 300.3831 0002318 211.6334 7.3926 1.00272567 27883

0 JO-97

1 43803U 18099AX 26186.62217810 .00022572 00000-0 68069-3 0 9995 2 43803 97.4115 249.5264 0005983 188.7802 171.3337 15.34293802416450

0 RS-44

1 44909U 19096E 26188.33221742 .00000018 00000-0 20916-4 0 9991 2 44909 82.5237 326.3182 0218596 97.2854 265.3149 12.79748960304927

0 FO-118

1 54684U 22167C 25064.68183564 .08547514 26414-5 93170-3 0 9992 2 54684 97.5856 230.7463 0011725 277.2083 82.7881 16.37185507124845

0 SONATE-2

1 59112U 24043Q 26188.47896187 .00031562 00000-0 38565-3 0 9993 2 59112 97.5550 340.1459 0007012 130.6505 229.5363 15.60352887131052

0 AO-123

1 61781U 24199AY 26188.55826096 .00005418 00000-0 15666-3 0 9999 2 61781 97.2977 57.0464 0012269 230.1776 129.8389 15.35977583137057

Keplerian bulletins are transmitted twice weekly from W1AW. The next scheduled transmission of these data will be Friday, July 10, 2026

at 2230z on Baudot and MFSK16

NNNN/EX