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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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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 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1376293511788175 1.5055e-08  
a 2.791963142037629 8.2738e-09 au
q 2.407707066283817 4.1247e-08 au
i 8.131977134105627 4.6915e-07 deg
node 141.3485493849428 3.3385e-06 deg
peri 141.4550119441249 9.6787e-06 deg
M 63.62422207677189 7.3045e-06 deg
tp 2458899.349954974737
(2020-Feb-19.84995497)
3.4537e-05 TDB
period 1703.973937445986
4.67
7.5745e-06
2.074e-08
d
yr
n .2112708370056344 9.3913e-10 deg/d
Q 3.176219217791441 9.4126e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3407  
   data-arc span      39191 days (107.30 yr)  
   first obs. used      1913-10-26  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41829  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:29:54  

Additional Information
 Earth MOID = 1.39572 au 
 Jupiter MOID = 2.01393 au 
 T_jup = 3.300 
[ 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 10.27   n/a E2021B10 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. 2020-October); 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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