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2645 Daphne Plane (1976 QD)
Classification: Main-belt Asteroid          SPK-ID: 2002645
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1050014965819036 1.1955e-08  
a 2.391092560489513 7.7999e-09 au
q 2.140024263172258 3.0799e-08 au
i 13.79518468866166 3.9094e-07 deg
node 349.7366085835984 1.2491e-06 deg
peri 80.03450723248694 6.3731e-06 deg
M 335.5157254518336 8.4978e-06 deg
tp 2459488.349701476727
(2021-Sep-30.84970148)
3.2091e-05 TDB
period 1350.495088860952
3.70
6.6081e-06
1.809e-08
d
yr
n .2665689071876854 1.3043e-09 deg/d
Q 2.642160857806767 8.6189e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2527  
   data-arc span      24402 days (66.81 yr)  
   first obs. used      1954-10-06  
   last obs. used      2021-07-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36924  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:53:37  

Additional Information
 Earth MOID = 1.20075 au 
 Jupiter MOID = 2.61205 au 
 T_jup = 3.486 
[ 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 12.17   n/a MPO636102  
diameter diameter 15.58 km 1.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
rotation period rot_per 8.360 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2007) Minor Planet Bull. 34, 32-37.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.0875   0.015 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3

2645 Daphne Plane (1976 QD)          Discovered 1976-Aug-30 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1976 QD = 1965 SG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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