Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.298989E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T02:43:28+0800
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    1 Object 1

    AOE ID 58662
    NORAD ID 58662
    Object Type PAYLOAD
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 60603
    NORAD ID 60603
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter TIANMU-1 21 STARLINK-31874
    Time of Closest Approach 2026-09-04T21:40:16+0000
    Collision Probability (Pc) 2.298989E-6
    Conjunction Distance (km) 2.188 km
    Relative Speed (km/s) 14.766 km/s
    Conjunction Risk Parameters R (Radial): -0.348 | I (In-track): 0.561 | C (Cross-track): 2.086
    Collision Risk Index (CRI) 0.42
    X Position (km) -6762.291 -6761.617
    Position Y (km) -947.242 -949.162
    Position Z (km) -443.438 -444.241
    Velocity X (km/s) 0.337 0.252
    Velocity Y (km/s) 1.049 -4.595
    Velocity Z (km/s) -7.552 6.092

    Orbital Parameters 国际轨道数据源

    Parameter TIANMU-1 21 STARLINK-31874
    Semimajor Axis (a) 6834.970 km 6840.873 km
    Eccentricity (e) 0.000770 0.000143
    Inclination (i) 97.4567° 53.1603°
    RAAN 7.8337° 195.6558°
    Perigee Argument 43.4721° 88.7861°
    Mean Anomaly (M) 316.7129° 271.3305°
    Apogee 462.097 km 463.713 km
    Perigee 451.569 km 461.759 km
    Orbit Epoch 2026-09-04T06:48:25+0000 2026-09-03T20:40:45+0000

    TIANMU-1 21 & STARLINK-31874 Collision Probability (Pc) Trend

    TIANMU-1 21 & STARLINK-31874 Collision Probability (Pc) TrendNot Available

    TIANMU-1 21 & STARLINK-31874 Miss Distance (Miss Distance) Trend

    TIANMU-1 21 & STARLINK-31874 Miss Distance (Miss Distance) TrendNot Available

    TIANMU-1 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31874Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    TIANMU-1 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31874Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with TIANMU-1 21

    No nearby objects data