Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.855389E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T01:58:51+0800
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    1 Object 1

    Name ALOS 2
    AOE ID 39766
    NORAD ID 39766
    Object Type PAYLOAD
    Country
    JP JP
    ← VS →

    2 Object 2

    AOE ID 57654
    NORAD ID 57654
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter ALOS 2 GAOFEN 12 04
    Time of Closest Approach 2026-10-21T08:11:53+0000
    Collision Probability (Pc) 2.855389E-6
    Conjunction Distance (km) 2.006 km
    Relative Speed (km/s) 14.938 km/s
    Conjunction Risk Parameters R (Radial): -0.546 | I (In-track): -0.253 | C (Cross-track): -1.912
    Collision Risk Index (CRI) 0.44
    X Position (km) 6063.458 6062.019
    Position Y (km) 3508.704 3510.101
    Position Z (km) -314.344 -314.307
    Velocity X (km/s) 0.803 0.239
    Velocity Y (km/s) -0.737 -1.061
    Velocity Z (km/s) 7.462 -7.462

    Orbital Parameters 国际轨道数据源

    Parameter ALOS 2 GAOFEN 12 04
    Semimajor Axis (a) 7009.142 km 7007.721 km
    Eccentricity (e) 0.000141 0.000387
    Inclination (i) 97.9232° 97.9083°
    RAAN 27.6323° 208.3989°
    Perigee Argument 96.9544° 79.5437°
    Mean Anomaly (M) 263.1828° 280.6210°
    Apogee 631.996 km 632.294 km
    Perigee 630.014 km 626.874 km
    Orbit Epoch 2026-10-19T05:53:28+0000 2026-10-19T06:41:44+0000

    ALOS 2 & GAOFEN 12 04 Collision Probability (Pc) Trend

    ALOS 2 & GAOFEN 12 04 Collision Probability (Pc) TrendNot Available

    ALOS 2 & GAOFEN 12 04 Miss Distance (Miss Distance) Trend

    ALOS 2 & GAOFEN 12 04 Miss Distance (Miss Distance) TrendNot Available

    ALOS 2Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    GAOFEN 12 04Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ALOS 2Collision Probability Trend

    Object 1 Probability TrendNot Available

    GAOFEN 12 04Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ALOS 2

    No nearby objects data