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7977 (1977 QQ5)
Classification: Amor [NEO]          SPK-ID: 2007977
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 113 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4662835124763266 6.357e-08  
a 2.225932762182864 1.1023e-08 au
q 1.188017015296106 1.4141e-07 au
i 25.16407236526099 9.5361e-06 deg
node 134.2122394444132 1.604e-05 deg
peri 248.07903800344 1.9342e-05 deg
M 183.5445561422998 1.8268e-05 deg
tp 2457995.064602667552
(2017-Aug-29.56460267)
6.5318e-05 JED
period 1213.015888208756
3.32
9.0107e-06
2.467e-08
d
yr
n .2967809436788226 2.2046e-09 deg/d
Q 3.263848509069621 1.6163e-08 au
  Orbit Determination Parameters
   # obs. used (total)      578  
   data-arc span      21929 days (60.04 yr)  
   first obs. used      1955-03-23  
   last obs. used      2015-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58867  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:00:05  

Additional Information
 Earth MOID = .354851 au 
 Jupiter MOID = 2.6464 au 
 T_jup = 3.385 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1 mag n/a MPO319185  
rotation period rot_per 7.457 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Incomplete or inconclusive result.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1998) http://www.asu.cas.cz/~ppravec/neo.htm]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
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)

7977 (1977 QQ5)          Discovered 1977-Aug-21 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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