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471 Papagena (A901 LA)
Classification: Main-belt Asteroid          SPK-ID: 2000471
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 110 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2285971158958011 2.691e-08  
a 2.889891554903604 5.3899e-09 au
q 2.229270680201008 7.778e-08 au
i 15.01522913874805 3.4943e-06 deg
node 83.80735858404663 1.3768e-05 deg
peri 315.5958291822645 1.6232e-05 deg
M 45.19201900159234 1.0264e-05 deg
tp 2459171.242121667625
5.0893e-05 TDB
period 1794.406136109954
n .2006234780162057 5.6127e-10 deg/d
Q 3.5505124296062 6.622e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3089  
   data-arc span      43812 days (119.95 yr)  
   first obs. used      1901-05-19  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49464  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:39:31  

Additional Information
 Earth MOID = 1.26392 au 
 Jupiter MOID = 1.92679 au 
 T_jup = 3.202 
[ 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 6.67   n/a MPCxxxxx IRAS observations used: 11
magnitude slope G 0.37   n/a PDS3 (MPC 17258) Fit
diameter diameter 148.128 km 3.880 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 7.113 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Lustig, G. (1977) Astron. Astrophys. Suppl. Ser. 30, 117-119.]
[Surdej, A.; Surdej, J. (1977) Astron. Astrophys. Suppl. Ser. 30, 121-124.]
[Scaltriti, F.; Zappala, V. (1978) Icarus 34, 428-435.]
[Menke, J. (2005) Minor Planet Bull. 32, 64-66.]
[Torppa, J.; Hentunen, V.-P.; Paakkonen, P.; Kehusmaa, P.; Muinonen, K. (2008) Icarus 198, 91-107.]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
[Behrend, R. (2018) Observatoire de Geneve web site,]
[Cellino, A.; Hestroffer, D.; Lu, X.-P.; Muinonen, K.; Tanga, P. (2019) Astron. Astrophys. 631, A67.]
geometric albedo albedo 0.164   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.828   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=6.10, mean=13.52, max.=25.40) deg.
U-B UB 0.473   0.007 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=6.10, mean=11.54, max.=18.92) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
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)

471 Papagena (A901 LA)          Discovered 1901-Jun-07 by Wolf, M. at Heidelberg
May 18 prediscovery observation by L. Carnera is in error.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A901 LA = A911 MB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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