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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1377666991276001 3.5499e-08  
a 2.792313252809822 1.1284e-08 au
q 2.407625473039961 1.0267e-07 au
i 8.126911214944162 4.068e-06 deg
node 141.3864157315576 2.7508e-05 deg
peri 141.9583289166963 3.1444e-05 deg
M 296.4600036270536 1.6473e-05 deg
tp 2458901.307955672836
(2020-Feb-21.80795567)
7.868e-05 TDB
period 1704.294463704568
4.67
1.0331e-05
2.828e-08
d
yr
n .211231103349054 1.2804e-09 deg/d
Q 3.177001032579684 1.2839e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2634  
   data-arc span      38646 days (105.81 yr)  
   first obs. used      1913-10-26  
   last obs. used      2019-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45588  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:12:29  

Additional Information
 Earth MOID = 1.39678 au 
 Jupiter MOID = 2.01459 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 10.41   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 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-January); 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1987-Jul-26 02:17 < 00:01 Iris 0.0147161605358492 0.0147143940975405 0.0147179270435196 6.6829655271976 6.68296546874427 2447002.595298881 0.383098884669375 103.296376623122 31.6547183511049 -33.296914591221 42120.2864248884 T 39 CATAB v2.0f-lin.ifort 2019-Sep-23 19:12:41 2019-Sep-23 19:12
2041-Oct-02 21:51 < 00:01 Psych 0.0270060275558003 0.0270035030410534 0.0270085521606876 3.97411055672541 3.97411044399204 2466795.410392622 0.344022528511506 150.1050828852 39.5987664147763 -34.4536447105794 61780.1235930332 T 39 CATAB v2.0f-lin.ifort 2019-Sep-23 19:12:41 2019-Sep-23 19:12

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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