Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.475198E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T10:44:02+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 53654
    NORAD ID 53654
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 68630
    NORAD ID 68630
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4420 STPSAT-7
    Time of Closest Approach 2026-09-05T04:01:10+0000
    Collision Probability (Pc) 4.475198E-6
    Conjunction Distance (km) 1.638 km
    Relative Speed (km/s) 12.315 km/s
    Conjunction Risk Parameters R (Radial): 0.748 | I (In-track): 0.871 | C (Cross-track): -1.168
    Collision Risk Index (CRI) 0.48
    X Position (km) 2539.599 2537.978
    Position Y (km) -2294.846 -2294.626
    Position Z (km) 5918.276 5918.193
    Velocity X (km/s) 3.449 4.894
    Velocity Y (km/s) -5.725 5.875
    Velocity Z (km/s) -3.691 0.183

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4420 STPSAT-7
    Semimajor Axis (a) 6843.706 km 6867.887 km
    Eccentricity (e) 0.000188 0.003604
    Inclination (i) 97.2856° 60.0204°
    RAAN 124.0676° 234.0774°
    Perigee Argument 94.3865° 80.1617°
    Mean Anomaly (M) 265.7592° 280.3531°
    Apogee 466.856 km 514.505 km
    Perigee 464.282 km 464.995 km
    Orbit Epoch 2026-09-04T02:26:38+0000 2026-09-04T08:45:29+0000

    STARLINK-4420 & STPSAT-7 Collision Probability (Pc) Trend

    STARLINK-4420 & STPSAT-7 Collision Probability (Pc) TrendNot Available

    STARLINK-4420 & STPSAT-7 Miss Distance (Miss Distance) Trend

    STARLINK-4420 & STPSAT-7 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4420Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STPSAT-7Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4420Collision Probability Trend

    Object 1 Probability TrendNot Available

    STPSAT-7Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4420

    No nearby objects data