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428 Monachia (A897 WA)
Classification: Main-belt Asteroid          SPK-ID: 2000428
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1776490373786126 1.2947e-08  
a 2.307860731560859 5.2225e-09 au
q 1.897871494195172 3.1291e-08 au
i 6.190931117481395 2.2188e-07 deg
node 17.54641322687063 3.8698e-06 deg
peri 15.86274397647128 4.7416e-06 deg
M .7297633365323705 3.2257e-06 deg
tp 2458997.904073671785
(2020-May-28.40407367)
1.147e-05 TDB
period 1280.598012224312
3.51
4.3468e-06
1.19e-08
d
yr
n .2811186621902563 9.5422e-10 deg/d
Q 2.717849968926546 6.1503e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3192  
   data-arc span      8515 days (23.31 yr)  
   first obs. used      1997-05-13  
   last obs. used      2020-09-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37487  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Sep-16 14:58:30  

Additional Information
 Earth MOID = .904608 au 
 Jupiter MOID = 2.7251 au 
 T_jup = 3.558 
[ 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 12.0   n/a MPO452162  
diameter diameter 20.184 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.63384 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Warner, B.D. (2014) Minor Planet Bull. 41, 144-155.]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Klinglesmith III, D.A. (2017) Minor Planet Bull. 44, 127-129.]
geometric albedo albedo 0.069   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

428 Monachia (A897 WA)          Discovered 1897-Nov-18 by Villiger, W. at Munich
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A897 WA = 1946 UL = 1949 OE = 1953 TN3 = 1974 XU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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