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1001 Gaussia (A923 PD)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001001
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219929730485361 2.7977e-08  
a 3.209033369375794 1.2605e-08 au
q 2.81755384803368 9.3121e-08 au
i 9.317404139217608 3.2435e-06 deg
node 259.1329134815659 2.2921e-05 deg
peri 145.5386041752013 2.8558e-05 deg
M 323.0578893880518 1.672e-05 deg
tp 2459415.966114543955
(2021-Jul-20.46611454)
9.7555e-05 TDB
period 2099.712224096257
5.75
1.2372e-05
3.387e-08
d
yr
n .1714520665587631 1.0102e-09 deg/d
Q 3.600512890717908 1.4143e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3190  
   data-arc span      41316 days (113.12 yr)  
   first obs. used      1908-01-01  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40817  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:47:50  

Additional Information
 Earth MOID = 1.83262 au 
 Jupiter MOID = 1.78355 au 
 T_jup = 3.160 
[ 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 9.76   n/a E2021B10  
diameter diameter 72.711 km 0.298 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 20.99 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Aznar, A.; Garceran, A.C.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 174-181.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.041   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.689   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=3.64, mean=12.51, max.=19.85) deg.
U-B UB 0.265   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=3.64, mean=12.51, max.=19.85) deg.
Tholen spectral type spec_T PC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

1001 Gaussia (A923 PD)          Discovered 1923-Aug-08 by Belyavskij, S. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A923 PD = A907 XC = A911 MD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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