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4807 Noboru (1991 AO)
Classification: Main-belt Asteroid          SPK-ID: 2004807
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2113507230265249 9.7675e-09  
a 2.32799671235568 5.7511e-09 au
q 1.835972923995934 2.2686e-08 au
i .4907209149656556 1.1556e-06 deg
node 329.9796802256151 6.5478e-05 deg
peri 93.70078125039542 6.7446e-05 deg
M 217.7125601595923 5.8014e-06 deg
tp 2459713.285853226143
(2022-May-13.78585323)
2.1962e-05 TDB
period 1297.394256080969
3.55
4.8077e-06
1.316e-08
d
yr
n .2774792614601593 1.0282e-09 deg/d
Q 2.820020500715426 6.9666e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2317  
   data-arc span      33187 days (90.86 yr)  
   first obs. used      1929-10-26  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45699  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:48:13  

Additional Information
 Earth MOID = .848732 au 
 Jupiter MOID = 2.50154 au 
 T_jup = 3.543 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.73   n/a MPCxxxxx  
diameter diameter 4.682 km 0.558 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.0415 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Contreras, M.E.; Olguin, L.; Loera-Gonzalez, L.; Saucedo, J.C.; et al. (2019) Minor Planet Bull. 46, 381-383.]
[Klinglesmith III, D.A. (2019) Minor Planet Bull. 46, 199.]
[Zeigler, K.; Barnhart, T.; Moser, A.; Rockafellow, T. (2019) Minor Planet Bull. 46, 191-193.]
[Lang, K. (2020) Minor Planet Bull. 47, 71-73.]
[Tomassini, A.; Scardella, M.; Franceschini, F.; Pierri, F. (2020) Minor Planet Bull. 47, 20.]
geometric albedo albedo 0.321   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4807 Noboru (1991 AO)          Discovered 1991-Jan-10 by Kobayashi, T. at Oizumi
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 AO = 1929 UG = 1961 VR = 1961 XF = 1970 GW = 1982 QM1 = 1982 RM3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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