Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.911577E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T18:42:37+0800
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    1 Object 1

    AOE ID 56956
    NORAD ID 56956
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    Name BESSA
    AOE ID 68836
    NORAD ID 68836
    Object Type PAYLOAD
    Country
    PT PT

    Conjunction Constraints

    Parameter BLACKJACK ACES-1 BESSA
    Time of Closest Approach 2026-09-05T17:46:11+0000
    Collision Probability (Pc) 3.911577E-6
    Conjunction Distance (km) 1.792 km
    Relative Speed (km/s) 15.08 km/s
    Conjunction Risk Parameters R (Radial): 1.291 | I (In-track): -0.16 | C (Cross-track): 1.233
    Collision Risk Index (CRI) 0.47
    X Position (km) 6191.453 6190.825
    Position Y (km) 2930.136 2928.465
    Position Z (km) -761.385 -761.24
    Velocity X (km/s) 1.18 -0.313
    Velocity Y (km/s) -0.565 -1.247
    Velocity Z (km/s) 7.493 -7.497

    Orbital Parameters 国际轨道数据源

    Parameter BLACKJACK ACES-1 BESSA
    Semimajor Axis (a) 6887.981 km 6886.074 km
    Eccentricity (e) 0.000129 0.001244
    Inclination (i) 97.6304° 97.4601°
    RAAN 22.6117° 203.7748°
    Perigee Argument 102.0366° 99.0987°
    Mean Anomaly (M) 258.1013° 261.1655°
    Apogee 510.732 km 516.500 km
    Perigee 508.956 km 499.374 km
    Orbit Epoch 2026-09-03T21:31:15+0000 2026-09-03T08:02:59+0000

    BLACKJACK ACES-1 & BESSA Collision Probability (Pc) Trend

    BLACKJACK ACES-1 & BESSA Collision Probability (Pc) TrendNot Available

    BLACKJACK ACES-1 & BESSA Miss Distance (Miss Distance) Trend

    BLACKJACK ACES-1 & BESSA Miss Distance (Miss Distance) TrendNot Available

    BLACKJACK ACES-1Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    BESSAMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    BLACKJACK ACES-1Collision Probability Trend

    Object 1 Probability TrendNot Available

    BESSACollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with BLACKJACK ACES-1

    No nearby objects data