SB KEP @ ARL $ARLK004

ARLK004 Keplerian data

ZCZC SK04

QST de W1AW

Keplerian Bulletin 4 ARLK004

From ARRL Headquarters

Newington, CT January 13, 2026

To all radio amateurs

SB KEP ARL ARLK004

ARLK004 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 26013.58647788 -.00000026 00000-0 12971-3 0 9990

2 07530 101.9966 25.1886 0012391 66.8418 48.3890 12.53694981341141

0 ISS

1 25544U 98067A 26013.40249039 .00009179 00000-0 17283-3 0 9993

2 25544 51.6332 345.7221 0007762 13.3130 346.8062 15.49273572547762

0 SO-50

1 27607U 02058C 26013.03883219 .00001105 00000-0 14937-3 0 9997

2 27607 64.5513 248.8509 0073445 290.7447 68.5799 14.82542377241453

0 AO-73

1 39444U 13066AE 26013.60801775 .00005695 00000-0 38202-3 0 9999

2 39444 97.8092 342.2989 0038991 12.1852 348.0309 15.06634241656362

0 AO-91

1 43017U 17073E 26013.07201035 .00005893 00000-0 27412-3 0 9997

2 43017 97.4928 243.5675 0159935 142.4698 218.7825 15.09595133441962

0 PO-101

1 43678U 18084H 26013.61480979 .00002738 00000-0 22733-3 0 9995

2 43678 98.1099 203.3783 0006702 312.4848 47.5807 14.99663030393048

0 QO-100

1 43700U 18090A 26013.52363891 .00000163 00000-0 00000-0 0 9991

2 43700 0.0172 51.6008 0001722 298.1525 337.5321 1.00272850 26120

0 JO-97

1 43803U 18099AX 26013.13049802 .00011224 00000-0 41271-3 0 9992

2 43803 97.4381 75.8625 0007575 99.3997 260.8099 15.28032535389902

0 RS-44

1 44909U 19096E 26013.52133913 .00000000 00000-0 -48797-4 0 9990

2 44909 82.5201 82.4908 0218217 145.8067 215.7311 12.79746582282563

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 26013.62612560 .00019611 00000-0 38766-3 0 9992

2 59112 97.5331 156.1185 0009023 51.8676 308.3385 15.47123163103908

0 MO-122

1 60209U 24125G 26013.08788618 .00023524 00000-0 43964-3 0 9994

2 60209 97.2504 228.5295 0015743 69.8690 290.4253 15.48607690 85450

0 AO-123

1 61781U 24199AY 26013.60546549 .00006669 00000-0 21266-3 0 9996

2 61781 97.3232 243.7194 0015404 136.5740 223.6719 15.32738546110221

Keplerian bulletins are transmitted twice weekly from W1AW. The next scheduled transmission of these data will be Friday, January 16, 2026, at 2330z on Baudot and BPSK31.

NNNN

/EX