Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.294838E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T08:06:08+0800
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    1 Object 1

    AOE ID 58685
    NORAD ID 58685
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 58700
    NORAD ID 58700
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-31121 TIANMU-1 15
    Time of Closest Approach 2026-10-21T16:12:39+0000
    Collision Probability (Pc) 1.294838E-6
    Conjunction Distance (km) 2.927 km
    Relative Speed (km/s) 13.232 km/s
    Conjunction Risk Parameters R (Radial): -2.805 | I (In-track): 0.415 | C (Cross-track): -0.72
    Collision Risk Index (CRI) 0.37
    X Position (km) -3231.277 -3231.887
    Position Y (km) 4299.854 4301.735
    Position Z (km) -4263.178 -4265.334
    Velocity X (km/s) -4.665 -1.794
    Velocity Y (km/s) -5.63 4.489
    Velocity Z (km/s) -2.143 5.885

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-31121 TIANMU-1 15
    Semimajor Axis (a) 6861.153 km 6860.647 km
    Eccentricity (e) 0.000196 0.000564
    Inclination (i) 43.0022° 97.4651°
    RAAN 256.6679° 119.5809°
    Perigee Argument 272.1824° 251.5858°
    Mean Anomaly (M) 87.8803° 108.4768°
    Apogee 484.361 km 486.380 km
    Perigee 481.671 km 478.640 km
    Orbit Epoch 2026-10-20T06:11:10+0000 2026-10-20T07:22:12+0000

    STARLINK-31121 & TIANMU-1 15 Collision Probability (Pc) Trend

    STARLINK-31121 & TIANMU-1 15 Collision Probability (Pc) TrendNot Available

    STARLINK-31121 & TIANMU-1 15 Miss Distance (Miss Distance) Trend

    STARLINK-31121 & TIANMU-1 15 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-31121Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    TIANMU-1 15Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-31121Collision Probability Trend

    Object 1 Probability TrendNot Available

    TIANMU-1 15Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-31121

    No nearby objects data