Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.292696E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-06T03:24:15+0800
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    1 Object 1

    AOE ID 22
    NORAD ID 22
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 59746
    NORAD ID 59746
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter EXPLORER 7 STARLINK-31681
    Time of Closest Approach 2026-09-07T09:17:46+0000
    Collision Probability (Pc) 1.292696E-6
    Conjunction Distance (km) 2.718 km
    Relative Speed (km/s) 11.083 km/s
    Conjunction Risk Parameters R (Radial): 0.659 | I (In-track): -1.809 | C (Cross-track): 1.918
    Collision Risk Index (CRI) 0.37
    X Position (km) 4228.502 4230.977
    Position Y (km) 5400.028 5398.92
    Position Z (km) -167.226 -167.407
    Velocity X (km/s) -3.787 -4.465
    Velocity Y (km/s) 3.068 3.343
    Velocity Z (km/s) 5.859 -5.199

    Orbital Parameters 国际轨道数据源

    Parameter EXPLORER 7 STARLINK-31681
    Semimajor Axis (a) 6852.317 km 6861.200 km
    Eccentricity (e) 0.007437 0.000134
    Inclination (i) 50.2412° 43.0016°
    RAAN 62.4909° 243.5310°
    Perigee Argument 89.7320° 266.9549°
    Mean Anomaly (M) 271.2164° 93.1149°
    Apogee 525.144 km 483.986 km
    Perigee 423.216 km 482.140 km
    Orbit Epoch 2026-09-05T11:51:52+0000 2026-09-05T01:34:44+0000

    EXPLORER 7 & STARLINK-31681 Collision Probability (Pc) Trend

    EXPLORER 7 & STARLINK-31681 Collision Probability (Pc) TrendNot Available

    EXPLORER 7 & STARLINK-31681 Miss Distance (Miss Distance) Trend

    EXPLORER 7 & STARLINK-31681 Miss Distance (Miss Distance) TrendNot Available

    EXPLORER 7Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31681Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    EXPLORER 7Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31681Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with EXPLORER 7

    No nearby objects data