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824 Anastasia (A916 FF)
Classification: Main-belt Asteroid          SPK-ID: 2000824
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379638019378937 3.4669e-08  
a 2.793546884700663 1.1267e-08 au
q 2.408138535595601 1.0009e-07 au
i 8.130455160941395 4.0537e-06 deg
node 141.3466965727306 2.7016e-05 deg
peri 141.6219066458971 3.0899e-05 deg
M 21.22343732929641 1.6037e-05 deg
tp 2458899.958445371898
(2020-Feb-20.45844537)
7.5747e-05 TDB
period 1705.424013298449
4.67
1.0317e-05
2.825e-08
d
yr
n .2110911991345346 1.277e-09 deg/d
Q 3.178955233805725 1.2821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2750  
   data-arc span      38950 days (106.64 yr)  
   first obs. used      1913-10-26  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45093  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:21:20  

Additional Information
 Earth MOID = 1.39801 au 
 Jupiter MOID = 2.01274 au 
 T_jup = 3.299 
[ 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 10.2   n/a MPO492759 IRAS observations used: 11
diameter diameter 32.457 km 0.259 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 250. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2010) Minor Planet Bull. 37, 159-161.]
[Devogele, M.; Tanga, P.; Bendjoya, P.; Rivet, J.P.; et al. (2017) ArXiv:1707.07503.]
geometric albedo albedo 0.087   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.848   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=4.51, mean=4.52, max.=4.52) deg.
U-B UB 0.410   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=4.52 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B L   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

824 Anastasia (A916 FF)          Discovered 1916-Mar-25 by Neujmin, G. at Simeis
Independent discovery Apr. 1 by M. Wolf, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A916 FF = 1948 BB = 1950 RR1 = A913 TB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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