Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.226052E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T13:57:45+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 52644
    NORAD ID 52644
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 64459
    NORAD ID 64459
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3985 STARLINK-34421
    Time of Closest Approach 2026-10-21T07:14:38+0000
    Collision Probability (Pc) 1.226052E-6
    Conjunction Distance (km) 2.94 km
    Relative Speed (km/s) 12.148 km/s
    Conjunction Risk Parameters R (Radial): 2.894 | I (In-track): -0.304 | C (Cross-track): 0.424
    Collision Risk Index (CRI) 0.37
    X Position (km) 3561.312 3562.376
    Position Y (km) -5752.847 -5755.556
    Position Z (km) -1004.406 -1004.817
    Velocity X (km/s) 4.4 3.468
    Velocity Y (km/s) 1.683 3.187
    Velocity Z (km/s) 6.01 -6.008

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3985 STARLINK-34421
    Semimajor Axis (a) 6837.867 km 6840.825 km
    Eccentricity (e) 0.000150 0.000220
    Inclination (i) 53.1596° 53.1581°
    RAAN 317.2862° 122.2272°
    Perigee Argument 91.6728° 80.1902°
    Mean Anomaly (M) 268.4447° 279.9349°
    Apogee 460.755 km 464.197 km
    Perigee 458.705 km 461.179 km
    Orbit Epoch 2026-10-19T08:25:23+0000 2026-10-19T20:01:37+0000

    STARLINK-3985 & STARLINK-34421 Collision Probability (Pc) Trend

    STARLINK-3985 & STARLINK-34421 Collision Probability (Pc) TrendNot Available

    STARLINK-3985 & STARLINK-34421 Miss Distance (Miss Distance) Trend

    STARLINK-3985 & STARLINK-34421 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3985Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-34421Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3985Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-34421Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3985

    No nearby objects data