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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1816657278908123 2.94e-08  
a 2.254156199077202 6.0671e-09 au
q 1.844653272392255 6.6488e-08 au
i 5.40028172539294 3.2526e-06 deg
node 104.576944696145 4.0159e-05 deg
peri 212.4712395841991 4.1726e-05 deg
M 223.5743535917847 1.3513e-05 deg
tp 2459468.955083738669
(2021-Sep-11.45508374)
4.7181e-05 TDB
period 1236.159289590621
3.38
4.9907e-06
1.366e-08
d
yr
n .2912246043300949 1.1758e-09 deg/d
Q 2.663659125762148 7.1693e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2728  
   data-arc span      35396 days (96.91 yr)  
   first obs. used      1923-08-14  
   last obs. used      2020-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43886  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:23:18  

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. 2020-October); 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

[ show close-approach data ]
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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