Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.735627E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T12:35:20+0800
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    1 Object 1

    AOE ID 116
    NORAD ID 116
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 65983
    NORAD ID 65983
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter TRANSIT 4A SDA_1673
    Time of Closest Approach 2026-10-21T07:29:41+0000
    Collision Probability (Pc) 1.735627E-6
    Conjunction Distance (km) 2.457 km
    Relative Speed (km/s) 13.767 km/s
    Conjunction Risk Parameters R (Radial): 2.449 | I (In-track): 0.077 | C (Cross-track): -0.185
    Collision Risk Index (CRI) 0.4
    X Position (km) 1217.269 1217.866
    Position Y (km) -5610.036 -5611.849
    Position Z (km) -4570.79 -4572.337
    Velocity X (km/s) 4.461 0.438
    Velocity Y (km/s) -3.114 4.699
    Velocity Z (km/s) 4.942 -5.655

    Orbital Parameters 国际轨道数据源

    Parameter TRANSIT 4A SDA_1673
    Semimajor Axis (a) 7298.549 km 7333.975 km
    Eccentricity (e) 0.007647 0.000019
    Inclination (i) 66.8092° 81.2977°
    RAAN 304.2872° 95.6814°
    Perigee Argument 190.2856° 68.6818°
    Mean Anomaly (M) 169.6663° 291.4358°
    Apogee 976.224 km 955.977 km
    Perigee 864.600 km 955.699 km
    Orbit Epoch 2026-10-20T11:00:52+0000 2026-10-20T20:00:55+0000

    TRANSIT 4A & SDA_1673 Collision Probability (Pc) Trend

    TRANSIT 4A & SDA_1673 Collision Probability (Pc) TrendNot Available

    TRANSIT 4A & SDA_1673 Miss Distance (Miss Distance) Trend

    TRANSIT 4A & SDA_1673 Miss Distance (Miss Distance) TrendNot Available

    TRANSIT 4AMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SDA_1673Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    TRANSIT 4ACollision Probability Trend

    Object 1 Probability TrendNot Available

    SDA_1673Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with TRANSIT 4A

    No nearby objects data