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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 ]

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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2117295234319498 2.7058e-08  
a 2.327245819528209 6.2787e-09 au
q 1.834499171250504 6.3063e-08 au
i .4907492729592033 3.6001e-06 deg
node 329.9758715530304 0.00038428 deg
peri 93.73990587541572 0.00038438 deg
M 162.1586725141665 9.8218e-06 deg
tp 2458416.383472404982
(2018-Oct-24.88347240)
3.4289e-05 TDB
period 1296.766597024504
3.55
5.2478e-06
1.437e-08
d
yr
n .2776135665632028 1.1235e-09 deg/d
Q 2.819992467805915 7.608e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2226  
   data-arc span      33106 days (90.64 yr)  
   first obs. used      1929-10-26  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45953  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:13:33  

Additional Information
 Earth MOID = .847895 au 
 Jupiter MOID = 2.50094 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 13.7   n/a MPO473832  
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 4.04 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Contreras, M.E.; Olguin, L.; Loera-Gonzalez, L.; Saucedo, J.C.; et al. (2019) Minor Planet Bull. 46-4, in press.]
[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.]
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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