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5461 Autumn (1983 HB1)
Classification: Main-belt Asteroid          SPK-ID: 2005461
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .142159614257358 3.0312e-08  
a 3.153889240445408 1.6927e-08 au
q 2.705533562613257 9.5291e-08 au
i 12.84536876348922 3.5481e-06 deg
node 111.8440643280484 1.8646e-05 deg
peri 192.5157030463273 2.3744e-05 deg
M 68.13797765817074 1.4788e-05 deg
tp 2458213.282637990680
(2018-Apr-04.78263799)
8.3788e-05 TDB
period 2045.823124112626
5.60
1.647e-05
4.509e-08
d
yr
n .1759682915678009 1.4166e-09 deg/d
Q 3.602244918277559 1.9333e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3025  
   data-arc span      13353 days (36.56 yr)  
   first obs. used      1983-04-10  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40464  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:46:20  

Additional Information
 Earth MOID = 1.69086 au 
 Jupiter MOID = 1.63755 au 
 T_jup = 3.153 
[ 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 11.8   n/a MPO332870  
diameter diameter 21.485 km 0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

5461 Autumn           Discovered 1983 Apr. 18 by N. G. Thomas at the Lowell Observatory's Anderson Mesa Station.
Autumn Dongxia Thomas, born on 2002 Jan. 15 in Wahun, China, is the discoverer's granddaughter.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030910/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1983 HB1 = 1934 PK = 1989 GS6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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