Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    5.181897E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T18:04:03+0800
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    1 Object 1

    Name USA 77
    AOE ID 21809
    NORAD ID 21809
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 60108
    NORAD ID 60108
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 77 STARLINK-32042
    Time of Closest Approach 2026-10-22T08:38:33+0000
    Collision Probability (Pc) 5.181897E-5
    Conjunction Distance (km) 0.777 km
    Relative Speed (km/s) 11.313 km/s
    Conjunction Risk Parameters R (Radial): -0.595 | I (In-track): 0.316 | C (Cross-track): -0.385
    Collision Risk Index (CRI) 0.69
    X Position (km) -4861.296 -4860.662
    Position Y (km) -2020.777 -2021.052
    Position Z (km) 4359.393 4359.037
    Velocity X (km/s) 5.817 -0.544
    Velocity Y (km/s) -2.59 -6.668
    Velocity Z (km/s) 4.732 -3.688

    Orbital Parameters 国际轨道数据源

    Parameter USA 77 STARLINK-32042
    Semimajor Axis (a) 7423.678 km 6840.876 km
    Eccentricity (e) 0.089877 0.000181
    Inclination (i) 63.2935° 53.1557°
    RAAN 185.0506° 73.5565°
    Perigee Argument 77.0595° 91.0486°
    Mean Anomaly (M) 292.9162° 269.0724°
    Apogee 1712.763 km 463.977 km
    Perigee 378.319 km 461.501 km
    Orbit Epoch 2026-10-19T16:47:15+0000 2026-10-19T15:59:51+0000

    USA 77 & STARLINK-32042 Collision Probability (Pc) Trend

    USA 77 & STARLINK-32042 Collision Probability (Pc) TrendNot Available

    USA 77 & STARLINK-32042 Miss Distance (Miss Distance) Trend

    USA 77 & STARLINK-32042 Miss Distance (Miss Distance) TrendNot Available

    USA 77Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-32042Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 77Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-32042Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 77

    No nearby objects data