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20325 Julianoey (1998 HO27)
Classification: Main-belt Asteroid          SPK-ID: 2020325
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07701129062201958 1.6831e-08  
a 2.379280384101146 7.4947e-09 au
q 2.196048930969862 4.1501e-08 au
i 6.09814258234828 4.2008e-07 deg
node 98.15732596531801 8.2346e-06 deg
peri 256.4405467495645 1.4486e-05 deg
M 354.7088362872884 1.404e-05 deg
tp 2459416.202238018284
(2021-Jul-20.70223802)
5.2313e-05 TDB
period 1340.500137907708
3.67
6.3338e-06
1.734e-08
d
yr
n .2685564811368827 1.2689e-09 deg/d
Q 2.56251183723243 8.0719e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2835  
   data-arc span      24500 days (67.08 yr)  
   first obs. used      1954-05-28  
   last obs. used      2021-06-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44567  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:58:10  

Additional Information
 Earth MOID = 1.19916 au 
 Jupiter MOID = 2.73805 au 
 T_jup = 3.528 
[ 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 13.29   n/a E2021B10  
diameter diameter 4.942 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.24474 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pray, D.P.; Pravec, P.; Benishek, V.; Pollock, J.; et al. (2014) CBET 4039.]
geometric albedo albedo 0.416   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20325 Julianoey           Discovered 1998 Apr. 21 by Spacewatch at Kitt Peak.
Julian Oey (b. 1964) is a prolific asteroid photometrist, observing from Australia. He is the principal discoverer of four binary asteroids and co-discoverer of several others, using the photometry technique. He has written or co-authored a number of papers on binary and other asteroids. Name suggested by P. Pravec and A. Harris.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-06-20Last Updated: 2016-06-21

Alternate Designations
 1998 HO27 = 1977 TT6 = 2004 BB159 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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