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385981 (2007 AH27)
Classification: Main-belt Asteroid          SPK-ID: 2385981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1969637001057169 5.4739e-08  
a 2.284479119337935 1.6189e-08 au
q 1.834519659178886 1.2947e-07 au
i 4.929339111896259 8.7237e-06 deg
node 302.9286825212587 7.7952e-05 deg
peri 103.8643229177631 8.2e-05 deg
M 129.4135309904626 2.4694e-05 deg
tp 2458943.126217537737
(2020-Apr-03.62621754)
8.4344e-05 TDB
period 1261.186217834076
3.45
1.3407e-05
3.671e-08
d
yr
n .2854455550729482 3.0343e-09 deg/d
Q 2.734438579496985 1.9378e-08 au
  Orbit Determination Parameters
   # obs. used (total)      135  
   data-arc span      7742 days (21.20 yr)  
   first obs. used      2000-01-28  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61703  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 07:11:52  

Additional Information
 Earth MOID = .851317 au 
 Jupiter MOID = 2.66959 au 
 T_jup = 3.572 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457822.5 (2017-Mar-10.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1970585105612885 5.512e-08  
q 1.834178276319169 1.3046e-07 au
tp 2457679.679013142287
(2016-Oct-18.17901314)
7.8987e-05 TDB
node 303.0833322582881 7.8054e-05 deg
peri 103.2550111518353 8.2045e-05 deg
i 4.925286702453955 8.7218e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      135  
   data-arc span      7742 days (21.20 yr)  
   first obs. used      2000-01-28  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61703  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 07:11:52  

Additional Information
 Jupiter MOID = 2.66959 au 
 T_jup = 3.572 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.03822791387097E-15 -7.158127721230395E-15 -1.010400135923491E-12 -8.465254397908434E-14 -2.81318845111293E-13 -1.150360616105727E-14
q -7.158127721230395E-15 1.701998221224223E-14 2.630765357349651E-12 1.974526201804616E-13 7.456460119702772E-13 2.712964935301471E-14
tp -1.010400135923491E-12 2.630765357349651E-12 6.238957233714242E-9 -7.479440659132665E-12 2.031820044243055E-9 -6.009257349694748E-12
node -8.465254397908434E-14 1.974526201804616E-13 -7.479440659132665E-12 6.092430945657173E-9 -6.070182961384959E-9 2.326733437255215E-10
peri -2.81318845111293E-13 7.456460119702772E-13 2.031820044243055E-9 -6.070182961384959E-9 6.731334392924251E-9 -2.337418214076114E-10
i -1.150360616105727E-14 2.712964935301471E-14 -6.009257349694748E-12 2.326733437255215E-10 -2.337418214076114E-10 7.606973201154164E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.05   n/a MPCxxxxx  

385981 (2007 AH27)          Discovered 2007-Jan-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-02-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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