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4323 Hortulus (1981 QN)
Classification: Main-belt Asteroid          SPK-ID: 2004323
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2028985277694433 3.2319e-08  
a 2.245805362985428 5.7684e-09 au
q 1.790134761178964 7.3355e-08 au
i 4.422484127752739 3.0555e-06 deg
node 259.7951953951539 4.6913e-05 deg
peri 102.7388693268522 4.7463e-05 deg
M 167.0763269720813 7.648e-06 deg
tp 2458429.982438731177
(2018-Nov-07.48243873)
2.5735e-05 TDB
period 1229.296368785366
3.37
4.7362e-06
1.297e-08
d
yr
n .2928504542445741 1.1283e-09 deg/d
Q 2.701475964791891 6.9388e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2478  
   data-arc span      24986 days (68.41 yr)  
   first obs. used      1951-11-30  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46254  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:06:18  

Additional Information
 Earth MOID = .794094 au 
 Jupiter MOID = 2.77925 au 
 T_jup = 3.600 
[ 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 13.4   n/a MPO416757  
diameter diameter 3.968 km 0.708 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 4.7354 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2015) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.410   0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

4323 Hortulus (1981 QN)          Discovered 1981-Aug-27 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 QN = 1978 WW14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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