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254 Augusta (A886 FA)
Classification: Main-belt Asteroid          SPK-ID: 2000254
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219494102608878 1.5419e-08  
a 2.19430135934907 4.3013e-09 au
q 1.926707602641787 3.3905e-08 au
i 4.512256498080922 4.2629e-07 deg
node 28.43559927541116 3.6466e-06 deg
peri 233.0891262359582 7.4552e-06 deg
M 105.9954612975737 7.4781e-06 deg
tp 2458850.935272901442
(2020-Jan-02.43527290)
2.4632e-05 TDB
period 1187.251795642325
3.25
3.4909e-06
9.558e-09
d
yr
n .3032212722872602 8.9157e-10 deg/d
Q 2.461895116056354 4.8258e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3749  
   data-arc span      49282 days (134.93 yr)  
   first obs. used      1886-04-01  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37889  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:34:48  

Additional Information
 Earth MOID = .913835 au 
 Jupiter MOID = 2.59088 au 
 T_jup = 3.656 
[ 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 11.76   n/a E2021B10 IRAS observations used: 2
diameter diameter 12.467 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.8949 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Lagerkvist, C.-I. (1978) Astron. Astrophys. Suppl. Ser. 31, 361-381.]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2015) Minor Planet Bull. 42, 91-94.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.170   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.845   0.049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.11, mean=7.99, max.=9.87) deg.
U-B UB 0.505   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.11 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

254 Augusta (A886 FA)          Discovered 1886-Mar-31 by Palisa, J. at Vienna
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
2040-Apr-07 11:33 < 00:01 Juno 0.0159744074566994 0.0159724138821472 0.0159764010331309 9.15932819484252 9.15932811169341 2466251.981188357 0.14436845490428 99.797361000953 26.5454516252681 5.3494272895481 25269.2270414738 T 38 CATAB v2.0f-lin.ifort 2021-Apr-12 10:36:24 2021-Apr-12 10:36
2082-Apr-17 07:47 < 00:01 Hebe 0.0470107700959407 0.0470075958729383 0.0470139444605235 8.49302865657279 8.49302864100247 2481601.824482482 0.168412729001681 204.913787487113 24.142176680808 39.7641234343551 188154.686533152 T 38 CATAB v2.0f-lin.ifort 2021-Apr-12 10:36:24 2021-Apr-12 10:36
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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