Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.236262E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-28T23:14:53+0800
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    1 Object 1

    Name DFH-1
    AOE ID 4382
    NORAD ID 4382
    Object Type PAYLOAD
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 67916
    NORAD ID 67916
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter DFH-1 STARLINK-36721
    Time of Closest Approach 2026-09-30T07:38:42+0000
    Collision Probability (Pc) 1.236262E-6
    Conjunction Distance (km) 2.193 km
    Relative Speed (km/s) 5.311 km/s
    Conjunction Risk Parameters R (Radial): -1.756 | I (In-track): 1.161 | C (Cross-track): 0.612
    Collision Risk Index (CRI) 0.37
    X Position (km) 3853.138 3851.068
    Position Y (km) 3844.386 3843.846
    Position Z (km) -4183.515 -4183.034
    Velocity X (km/s) -5.828 -6.233
    Velocity Y (km/s) -0.597 3.711
    Velocity Z (km/s) -5.407 -2.329

    Orbital Parameters 国际轨道数据源

    Parameter DFH-1 STARLINK-36721
    Semimajor Axis (a) 7583.358 km 6861.163 km
    Eccentricity (e) 0.103206 0.000137
    Inclination (i) 68.4274° 42.9990°
    RAAN 211.5263° 181.7970°
    Perigee Argument 247.4478° 250.9084°
    Mean Anomaly (M) 101.4270° 109.1620°
    Apogee 1987.870 km 483.966 km
    Perigee 422.572 km 482.086 km
    Orbit Epoch 2026-09-28T05:08:43+0000 2026-09-28T02:48:02+0000

    DFH-1 & STARLINK-36721 Collision Probability (Pc) Trend

    DFH-1 & STARLINK-36721 Collision Probability (Pc) TrendNot Available

    DFH-1 & STARLINK-36721 Miss Distance (Miss Distance) Trend

    DFH-1 & STARLINK-36721 Miss Distance (Miss Distance) TrendNot Available

    DFH-1Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-36721Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DFH-1Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-36721Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DFH-1

    No nearby objects data