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847 Agnia (A915 RP)
Classification: Main-belt Asteroid          SPK-ID: 2000847
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09590568896625382 3.6219e-08  
a 2.781324071336742 9.132e-09 au
q 2.514579270036765 1.0006e-07 au
i 2.481918253190861 3.7334e-06 deg
node 270.9190406700333 9.7154e-05 deg
peri 129.7904800871173 9.9441e-05 deg
M 145.9649283229569 2.1891e-05 deg
tp 2458313.555206677360
(2018-Jul-14.05520668)
0.00010232 TDB
period 1694.243462710322
4.64
8.3441e-06
2.284e-08
d
yr
n .2124842196080246 1.0465e-09 deg/d
Q 3.048068872636718 1.0008e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3215  
   data-arc span      41573 days (113.82 yr)  
   first obs. used      1906-10-08  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4274  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:23:22  

Additional Information
 Earth MOID = 1.52361 au 
 Jupiter MOID = 2.30651 au 
 T_jup = 3.325 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.2   n/a MPO502161 IRAS observations used: 7
diameter diameter 24.931 km 0.313 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.827 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pray, D. (2005) Minor Planet Bull. 32, 48-51.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
geometric albedo albedo 0.152   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.856   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=3.59 deg.
U-B UB 0.496   0.025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=3.59 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 S   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)

847 Agnia (A915 RP)          Discovered 1915-Sep-02 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A915 RP = A906 SF = A908 AG = A916 YA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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