FLOCK 4H-21 is a payload in SSO orbit, operated by Planet Labs, Inc. (Planet), launched 2025.
| Orbit class | SSO |
| Inclination | 97.4172° |
| Eccentricity | 0.0001883 |
| Period | 94.7 min |
| Apogee | 504 km |
| Perigee | 502 km |
| Mean motion | 15.20964467 rev/day |
| RAAN | 261.6165° |
| Arg of perigee | 194.8098° |
| Mean anomaly | 165.3083° |
| B* | 2.5304e-4 |
| Rev at epoch | 3,272 |
1 66724U 25276BL 26188.14926867 .00005537 00000-0 25304-3 0 99922 66724 97.4172 261.6165 0001883 194.8098 165.3083 15.20964467 32727{
"OBJECT_NAME": "FLOCK 4H-21",
"OBJECT_ID": "2025-276BL",
"EPOCH": "2026-07-07T03:34:56.813+00:00",
"MEAN_MOTION": 15.20964467,
"ECCENTRICITY": 0.0001883,
"INCLINATION": 97.4172,
"RA_OF_ASC_NODE": 261.6165,
"ARG_OF_PERICENTER": 194.8098,
"MEAN_ANOMALY": 165.3083,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 66724,
"REV_AT_EPOCH": 3272,
"BSTAR": 0.00025304,
"MEAN_MOTION_DOT": 0.00005537,
"MEAN_MOTION_DDOT": 0
}Reconstructed from CelesTrak OMM mean-elements (element-set number is a placeholder). TLE/OMM data is approximate. Not for operational use or collision avoidance.
| Name | FLOCK 4H-21 |
| Operator | |
| Country | United States |
| Launch date | |
| Launch mass (kg) | |
| Mission purpose | — |
| Object class |
//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.
| Orbital regime |
| Status |