2212 Hephaistos help
Last update: 2025-08-17 13:00 UTC
Epoch
Orbit properties
  • Epoch
  • Semimajor Axis
  • Eccentricity (e)
  • Inclination (i)
  • Long. of Ascending Node (Ω)
  • Arg. of Perihelion (ω)
  • Mean Anomaly (M)
  • Perihelion distance
  • Aphelion distance
  • Asc. Node-Earth Sep.
  • Desc. Node-Earth Sep.
  • MOID
  • Orbit Period
  • U parameter
Value
1-sigma variation
Unit
Epoch
Value
61000.0000
1-sigma variation
Unit
MJD
Semimajor Axis
Value
2.167588
1-sigma variation
3.976E-9
Unit
Eccentricity (e)
Value
0.834660
1-sigma variation
2.161E-8
Unit
-
Inclination (i)
Value
11.2025
1-sigma variation
4.506E-6
Unit
Long. of Ascending Node (Ω)
Value
26.5655
1-sigma variation
1.535E-5
Unit
Arg. of Perihelion (ω)
Value
210.4630
1-sigma variation
1.516E-5
Unit
Mean Anomaly (M)
Value
308.24302
1-sigma variation
2.946E-6
Unit
Perihelion distance
Value
0.358388
1-sigma variation
Unit
Aphelion distance
Value
3.976787
1-sigma variation
Unit
Asc. Node-Earth Sep.
Value
1.347010
1-sigma variation
Unit
Desc. Node-Earth Sep.
Value
-0.622705
1-sigma variation
Unit
MOID
Value
0.111943
1-sigma variation
Unit
Orbit Period
Value
1165.6373
1-sigma variation
Unit
U parameter
Value
0.0
1-sigma variation
Unit
-
Covariance Matrix
aeiΩωM
a1.58115E-17-2.56552E-17-3.98809E-15-2.76984E-152.25550E-15-8.01299E-15
e-2.56552E-174.67089E-16-2.20238E-15-6.99331E-15-1.25256E-163.07639E-14
i-3.98809E-15-2.20238E-152.03030E-113.89712E-11-3.77035E-111.19569E-12
Ω-2.76984E-15-6.99331E-153.89712E-112.35660E-10-2.29959E-101.15078E-12
ω2.25550E-15-1.25256E-16-3.77035E-11-2.29959E-102.29848E-10-3.33178E-12
M-8.01299E-153.07639E-141.19569E-121.15078E-12-3.33178E-128.67845E-12
Date of computation: 2025-08-17 13:00 UTC
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