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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2026528951672496 3.402e-08  
a 2.246189102015803 6.1678e-09 au
q 1.790992377399176 7.7705e-08 au
i 4.422572663210314 3.4497e-06 deg
node 259.7971948943716 4.7963e-05 deg
peri 102.7718592193986 4.8702e-05 deg
M 49.93407722387014 8.0149e-06 deg
tp 2458429.945796164795
(2018-Nov-07.44579616)
2.737e-05 TDB
period 1229.611455627794
3.37
5.0646e-06
1.387e-08
d
yr
n .2927754115760066 1.2059e-09 deg/d
Q 2.701385826632431 7.4178e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2105  
   data-arc span      24543 days (67.20 yr)  
   first obs. used      1951-11-30  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48522  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 18:32:27  

Additional Information
 Earth MOID = .794095 au 
 Jupiter MOID = 2.77581 au 
 T_jup = 3.599 
[ 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-January); 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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