Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.576178E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T17:15:23+0800
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    1 Object 1

    AOE ID 43778
    NORAD ID 43778
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    Name BRO-21
    AOE ID 69007
    NORAD ID 69007
    Object Type PAYLOAD
    Country
    FR FR

    Conjunction Constraints

    Parameter SPAWAR-CAL-OR BRO-21
    Time of Closest Approach 2026-09-13T12:23:40+0000
    Collision Probability (Pc) 4.576178E-6
    Conjunction Distance (km) 1.688 km
    Relative Speed (km/s) 14.611 km/s
    Conjunction Risk Parameters R (Radial): -1.683 | I (In-track): -0.027 | C (Cross-track): -0.099
    Collision Risk Index (CRI) 0.48
    X Position (km) -2313.844 -2314.345
    Position Y (km) 2074.782 2075.369
    Position Z (km) 6121.581 6123.081
    Velocity X (km/s) -3.412 6.3
    Velocity Y (km/s) 5.961 -2.739
    Velocity Z (km/s) -3.293 3.298

    Orbital Parameters 国际轨道数据源

    Parameter SPAWAR-CAL-OR BRO-21
    Semimajor Axis (a) 6869.961 km 6878.327 km
    Eccentricity (e) 0.001138 0.000947
    Inclination (i) 97.3716° 97.3922°
    RAAN 301.2564° 151.1124°
    Perigee Argument 21.9595° 107.7157°
    Mean Anomaly (M) 338.2128° 252.5114°
    Apogee 499.640 km 506.706 km
    Perigee 484.008 km 493.674 km
    Orbit Epoch 2026-09-11T09:29:05+0000 2026-09-11T15:55:48+0000

    SPAWAR-CAL-OR & BRO-21 Collision Probability (Pc) Trend

    SPAWAR-CAL-OR & BRO-21 Collision Probability (Pc) TrendNot Available

    SPAWAR-CAL-OR & BRO-21 Miss Distance (Miss Distance) Trend

    SPAWAR-CAL-OR & BRO-21 Miss Distance (Miss Distance) TrendNot Available

    SPAWAR-CAL-ORMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    BRO-21Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SPAWAR-CAL-ORCollision Probability Trend

    Object 1 Probability TrendNot Available

    BRO-21Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SPAWAR-CAL-OR

    No nearby objects data