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942 Romilda (A920 TG)
Classification: Main-belt Asteroid          SPK-ID: 2000942
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1674525834086265 2.5011e-08  
a 3.167122505090161 1.2857e-08 au
q 2.636779659641213 8.2972e-08 au
i 10.54330862487614 1.2604e-06 deg
node 71.27340269581666 7.7244e-06 deg
peri 319.2119796469897 6.1997e-06 deg
M 293.2362223897539 6.2899e-06 deg
tp 2459582.298415250079
(2022-Jan-02.79841525)
3.7139e-05 TDB
period 2058.71258951852
5.64
1.2536e-05
3.432e-08
d
yr
n .1748665655579416 1.0648e-09 deg/d
Q 3.69746535053911 1.501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2548  
   data-arc span      36555 days (100.08 yr)  
   first obs. used      1920-10-11  
   last obs. used      2020-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42499  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:40:09  

Additional Information
 Earth MOID = 1.65288 au 
 Jupiter MOID = 1.76371 au 
 T_jup = 3.155 
[ 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 11.07   n/a E2021B10  
diameter diameter 36.772 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.965 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Cooney, Jr.; W.R.; Gross, J.; Terrell, D.; Reddy, V.; Dyvig, R. (2007) Minor Planet Bull. 34, 47-48.]
geometric albedo albedo 0.056   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

942 Romilda (A920 TG)          Discovered 1920-Oct-11 by Reinmuth, K. at Heidelberg
Independent discovery later the same night by A. Schwassmann, Bergedorf.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A920 TG = 2019 GE35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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