Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    4.161674E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T13:48:23+0800
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    1 Object 1

    AOE ID 52640
    NORAD ID 52640
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 64768
    NORAD ID 64768
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3977 STARLINK-34609
    Time of Closest Approach 2026-10-21T01:29:11+0000
    Collision Probability (Pc) 4.161674E-6
    Conjunction Distance (km) 1.379 km
    Relative Speed (km/s) 4.849 km/s
    Conjunction Risk Parameters R (Radial): -0.204 | I (In-track): -1.292 | C (Cross-track): 0.435
    Collision Risk Index (CRI) 0.47
    X Position (km) 4157.676 4157.923
    Position Y (km) 1180.298 1178.951
    Position Z (km) 5292.761 5292.603
    Velocity X (km/s) -3.786 -0.169
    Velocity Y (km/s) 6.456 7.482
    Velocity Z (km/s) 1.531 -1.53

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3977 STARLINK-34609
    Semimajor Axis (a) 6840.854 km 6840.704 km
    Eccentricity (e) 0.000125 0.000088
    Inclination (i) 53.1607° 53.1594°
    RAAN 316.8780° 268.9703°
    Perigee Argument 86.3292° 86.7312°
    Mean Anomaly (M) 273.7853° 273.3791°
    Apogee 463.572 km 463.169 km
    Perigee 461.862 km 461.965 km
    Orbit Epoch 2026-10-19T10:04:40+0000 2026-10-19T16:12:26+0000

    STARLINK-3977 & STARLINK-34609 Collision Probability (Pc) Trend

    STARLINK-3977 & STARLINK-34609 Collision Probability (Pc) TrendNot Available

    STARLINK-3977 & STARLINK-34609 Miss Distance (Miss Distance) Trend

    STARLINK-3977 & STARLINK-34609 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3977Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-34609Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3977Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-34609Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3977

    No nearby objects data