Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.752179E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-30T17:00:33+0800
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    1 Object 1

    Name USA 74
    AOE ID 21799
    NORAD ID 21799
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 66437
    NORAD ID 66437
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 74 STARLINK-35474
    Time of Closest Approach 2026-10-31T03:07:26+0000
    Collision Probability (Pc) 2.752179E-5
    Conjunction Distance (km) 0.927 km
    Relative Speed (km/s) 10.445 km/s
    Conjunction Risk Parameters R (Radial): 0.028 | I (In-track): 0.675 | C (Cross-track): -0.634
    Collision Risk Index (CRI) 0.64
    X Position (km) -5225.42 -5225.67
    Position Y (km) 2164.715 2163.846
    Position Z (km) 3876.272 3876.47
    Velocity X (km/s) 2.111 -4.432
    Velocity Y (km/s) -5.528 -5.485
    Velocity Z (km/s) 5.235 -2.906

    Orbital Parameters 国际轨道数据源

    Parameter USA 74 STARLINK-35474
    Semimajor Axis (a) 7402.957 km 6861.148 km
    Eccentricity (e) 0.088049 0.000152
    Inclination (i) 63.2912° 43.0009°
    RAAN 140.5010° 34.5341°
    Perigee Argument 75.8699° 268.3630°
    Mean Anomaly (M) 293.8475° 141.8016°
    Apogee 1676.640 km 484.058 km
    Perigee 373.000 km 481.964 km
    Orbit Epoch 2026-10-29T22:46:41+0000 2026-10-29T10:00:02+0000

    USA 74 & STARLINK-35474 Collision Probability (Pc) Trend

    USA 74 & STARLINK-35474 Collision Probability (Pc) TrendNot Available

    USA 74 & STARLINK-35474 Miss Distance (Miss Distance) Trend

    USA 74 & STARLINK-35474 Miss Distance (Miss Distance) TrendNot Available

    USA 74Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-35474Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 74Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-35474Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 74

    No nearby objects data