Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.534391E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T00:34:50+0800
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    1 Object 1

    AOE ID 57031
    NORAD ID 57031
    Object Type UNKNOWN
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 58883
    NORAD ID 58883
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter OBJECT AD STARLINK-31209
    Time of Closest Approach 2026-09-12T07:41:46+0000
    Collision Probability (Pc) 2.534391E-6
    Conjunction Distance (km) 2.093 km
    Relative Speed (km/s) 14.609 km/s
    Conjunction Risk Parameters R (Radial): 1.019 | I (In-track): 0.523 | C (Cross-track): -1.751
    Collision Risk Index (CRI) 0.43
    X Position (km) 5979.502 5980.343
    Position Y (km) 1408.942 1410.842
    Position Z (km) -3016.298 -3016.055
    Velocity X (km/s) 3.484 -3.602
    Velocity Y (km/s) -0.318 4.386
    Velocity Z (km/s) 6.777 -5.1

    Orbital Parameters 国际轨道数据源

    Parameter OBJECT AD STARLINK-31209
    Semimajor Axis (a) 6832.747 km 6840.900 km
    Eccentricity (e) 0.000902 0.000158
    Inclination (i) 97.5023° 53.1591°
    RAAN 8.4905° 186.1768°
    Perigee Argument 127.5795° 92.5370°
    Mean Anomaly (M) 232.6270° 267.5813°
    Apogee 460.776 km 463.842 km
    Perigee 448.444 km 461.684 km
    Orbit Epoch 2026-09-11T06:48:48+0000 2026-09-09T05:17:49+0000

    OBJECT AD & STARLINK-31209 Collision Probability (Pc) Trend

    OBJECT AD & STARLINK-31209 Collision Probability (Pc) TrendNot Available

    OBJECT AD & STARLINK-31209 Miss Distance (Miss Distance) Trend

    OBJECT AD & STARLINK-31209 Miss Distance (Miss Distance) TrendNot Available

    OBJECT ADMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31209Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    OBJECT ADCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31209Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with OBJECT AD

    No nearby objects data