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461 Saskia (A900 UG)
Classification: Main-belt Asteroid          SPK-ID: 2000461
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .144483238873048 2.1813e-08  
a 3.11854262300795 1.1652e-08 au
q 2.667965484272111 7.2211e-08 au
i 1.470937467624174 1.8426e-06 deg
node 156.5113276255321 3.4789e-05 deg
peri 308.1901087475974 3.3958e-05 deg
M 247.3193580045524 9.9831e-06 deg
tp 2459830.111664085630
(2022-Sep-07.61166409)
5.7542e-05 TDB
period 2011.527402195527
5.51
1.1273e-05
3.086e-08
d
yr
n .1789684791800847 1.003e-09 deg/d
Q 3.56911976174379 1.3335e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3217  
   data-arc span      43913 days (120.23 yr)  
   first obs. used      1900-10-22  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .443  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:56:03  

Additional Information
 Earth MOID = 1.68498 au 
 Jupiter MOID = 1.57062 au 
 T_jup = 3.200 
[ 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 10.53   n/a E2021B10  
diameter diameter 43.603 km 0.256 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.348 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Buchheim, R.K. (2006) Minor Planet Bull. 33, 63.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Klinglesmith III, D.A.; Hanowell, J.; Risely, E.; Turk, J.; et al. (2013) Minor Planet Bull. 40, 190-193.]
[Klinglesmith III, D.A. (2017) Minor Planet Bull. 44, 127-129.]
[Klinglesmith III, D.A.; Lovata, E.A. (2018) Minor Planet Bull. 45, 397-398.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.057   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.610   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.20, mean=3.53, max.=3.87) deg.
U-B UB 0.310   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.20, mean=3.53, max.=3.87) deg.
Tholen spectral type spec_T FCX   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

461 Saskia (A900 UG)          Discovered 1900-Oct-22 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A900 UG = 1935 CT = A917 XE = A924 DB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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