SB KEP ARL ARLK055

ARLK055 Keplerian data

ZCZC SK55

QST de W1AW

Keplerian Bulletin 55 ARLK055

From ARRL Headquarters

Newington, CT July 27, 2026

To all radio amateurs

SB KEP ARL ARLK055

ARLK055 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 7530U 74089B 26208.54125306 -.00000024 00000-0 14195-3 0 9997 2 7530 101.9910 222.2088 0012579 55.4579 98.9910 12.53698780365572

0 ISS

1 25544U 98067A 26208.37844919 .00011554 00000-0 21591-3 0 9990 2 25544 51.6322 101.1989 0007008 342.7043 17.3706 15.49203967577984

0 SO-50

1 27607U 02058C 26207.80450946 .00001274 00000-0 16689-3 0 9997 2 27607 64.5528 6.4018 0074176 255.1416 104.1466 14.83120707270332

0 AO-73

1 39444U 13066AE 26208.35411493 .00008513 00000-0 51957-3 0 9995 2 39444 97.8293 180.6580 0037694 68.3219 292.2016 15.09973422685722

0 AO-91

1 43017U 17073E 26208.41950647 .00007706 00000-0 33293-3 0 9990 2 43017 97.4658 74.8150 0148856 188.9657 170.8912 15.13212866471473

0 PO-101

1 43678U 18084H 26208.51378579 .00001521 00000-0 12547-3 0 9993 2 43678 98.1220 46.4917 0011967 45.7056 314.5146 15.00600673422262

0 QO-100

1 43700U 18090A 26208.09280969 .00000000 00000-0 00000-0 0 9993 2 43700 0.0281 73.2930 0002484 83.8862 206.7915 1.00269706 28072

0 JO-97

1 43803U 18099AX 26208.14072980 .00018469 00000-0 54739-3 0 9993 2 43803 97.4112 271.1419 0007311 123.4939 236.7004 15.34873345419753

0 RS-44

1 44909U 19096E 26208.26799597 -.00000004 00000-0 -66215-4 0 9993 2 44909 82.5246 313.0750 0218249 50.8858 311.1425 12.79748797307473

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 26208.22316400 .00047291 00000-0 54648-3 0 9990 2 59112 97.5561 1.1774 0006073 64.9454 295.2433 15.61737721134131

0 AO-123

1 61781U 24199AY 26208.49206723 .00008065 00000-0 23007-3 0 9993 2 61781 97.2949 76.8033 0014352 156.7686 203.4210 15.36210324140112

Keplerian bulletins are transmitted twice weekly from W1AW. The next scheduled transmission of these data will be Friday, July 31, 2026 at 2230z on Baudot and MFSK16

NNNN

/EX