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1026 Ingrid (A923 PH)
Classification: Main-belt Asteroid          SPK-ID: 2001026
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1816657278067692 2.9402e-08  
a 2.254156199086045 6.068e-09 au
q 1.844653272588938 6.6492e-08 au
i 5.400281734135745 3.2546e-06 deg
node 104.576944658814 4.0164e-05 deg
peri 212.4712396980313 4.1731e-05 deg
M 223.5743535323374 1.3514e-05 deg
tp 2459468.955083945554
(2021-Sep-11.45508395)
4.7185e-05 TDB
period 1236.159289597896
3.38
4.9915e-06
1.367e-08
d
yr
n .2912246043283811 1.1759e-09 deg/d
Q 2.663659125583153 7.1704e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2719  
   data-arc span      35372 days (96.84 yr)  
   first obs. used      1923-08-14  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43812  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:25:11  

Additional Information
 Earth MOID = .833645 au 
 Jupiter MOID = 2.62167 au 
 T_jup = 3.597 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6   n/a MPO416715  
diameter diameter 7.353 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.437 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D.; Warner, B.D. (2019) Minor Planet Bull. 45, 66-71.]
geometric albedo albedo 0.156   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1026 Ingrid (A923 PH)          Discovered 1923-Aug-13 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A923 PH = 1957 UC = 1963 GD = 1981 WL8 = 1986 CG2 = 1986 ES2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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