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9107 Narukospa (1997 AE4)
Classification: Main-belt Asteroid          SPK-ID: 2009107
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .205624409916984 1.9236e-08  
a 2.86394386288539 1.0049e-08 au
q 2.275047096044214 5.8237e-08 au
i 6.811328337915266 4.2586e-07 deg
node 126.1388619619733 6.0003e-06 deg
peri 13.19422676485043 6.5297e-06 deg
M 3.094143776379541 4.0378e-06 deg
tp 2459381.284607224749
(2021-Jun-15.78460722)
1.9809e-05 TDB
period 1770.293106902631
4.85
9.3175e-06
2.551e-08
d
yr
n .2033561553147936 1.0703e-09 deg/d
Q 3.452840629726566 1.2115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2192  
   data-arc span      14429 days (39.50 yr)  
   first obs. used      1981-11-25  
   last obs. used      2021-05-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46249  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 01:54:34  

Additional Information
 Earth MOID = 1.28977 au 
 Jupiter MOID = 1.58221 au 
 T_jup = 3.259 
[ 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 13.12   n/a MPCxxxxx  
diameter diameter 19.07 km 1.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
geometric albedo albedo 0.0255   0.005 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

9107 Narukospa           Discovered 1997 Jan. 6 by T. Kobayashi at Oizumi.
Naruko-onsen is a town famous for its hot springs, visited by tourists all year long. Narukokyo is a gorge, 100 meters deep and known for its beautiful autumn leaves. Onikobe geyser ejects hot water 20 meters into the air. The Naruko crater on Mars is also named for the town.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091004/MPCPages.arcLast Updated: 2009-10-06

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Alternate Designations
 1997 AE4 = 1981 WB8 = 1983 JK = 1990 RA15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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